How to use ChatGPT?

by Zoran Vulovic | Nov 15, 2025 | Blog

How to use ChatGPT?

The complete guide to 2025.

ChatGPT has become synonymous with artificial intelligence in everyday life and business. From the moment the company OpenAI launched it, it changed the way people write, research, learn and communicate.

Today, it is used by more than 700 million users per month, and in Serbia it is one of the most popular tools for digital marketing, content creation and automation of business processes.

If you’ve been wondering how to use ChatGPT and how it can improve your business, then this guide was created just for you.

Below you will find out how ChatGPT works, how to use it on the web and on the phone, what are the most practical applications in business, as well as concrete examples from SmartThink practice that will help you understand its full power and potential.

Learn how to use ChatGPT in your marketing, business and everyday work. Discover the practical advice of the SmartThink team on the application of AI in Serbia.

What is it ChatGPT and how does it work?

ChatGPT is an advanced AI chatbot developed by OpenAI, which currently uses the GPT-5 language model to understand and generate natural language. In other words, it is a digital assistant that can write texts, translate, create images, analyze data, search the Internet and much more for you.

And in fact, all with the help of simple text queries, known as prompts.

What are the key features of ChatGPT?

Answers questions and writes texts (essays, blogs, emails, ads).
Analyzes data from tables and reports.
Generates images and explains their elements.
Searches the Internet for the latest information.
Assists in programming and writing code.
It can use voice and recognize images.

ChatGPT currently exists in several versions, but the most famous are:

Free version (GPT-4o mini) – limited but sufficient for daily use.
ChatGPT Plus (GPT-5) – faster, more accurate and able to use images, voice and files.
ChatGPT Enterprise – version for companies, with additional security options.

How to use ChatGPT? Step by step

It only takes a few minutes to get started using ChatGPT.

That process begins as follows:

1. Create an account

Go to chat.openai.com and click Sign up. You can register with a Google or Microsoft account or by using your email address.

After verifying the phone number, the system will immediately let you into the application.

2. Select version

If you use the free version, you can get started right away. If you decide on ChatGPT Plus, the monthly subscription is 20 USD (about 2,100 dinars), and you can pay it via Revolut or Payoneer card from Serbia.

3. Start with the first prompt

In the message field, write your question, for example, “Write a plan for a blog post about the benefits of digital marketing.”

“ChatGPT will generate a complete text proposal, complete with structure and ideas, within seconds.

4. Try additional features

In addition to classic typing, you can:

Add images and files (Excel, PDF, Word) for analysis.
Use voice commands if you have a microphone.
Search the Internet with the Web browsing option.
Create your own custom GPTs (eg “Your Copywriter GPT”).

Tips for writing effective prompts

The quality of the answer directly depends on the quality of the query you ask.

That’s why it’s important to learn how to write a good prompt.

Here are two practical examples:

Bad prompt

“Write a text about marketing.”

Better prompt

“Explain what SEO is and how a small business in Belgrade can use site optimization to attract local clients.”

Bad prompt

“Explain SEO.”

Better prompt

“Write a professional text of 500 words about digital marketing for small businesses in Serbia, in pro tone, with examples from practice.”

SmartThink advice:

The more context you provide (target audience, tone, length, goal of the text), the more relevant and useful results ChatGPT will provide.

How to use ChatGPT on phone and computer?

You can use ChatGPT on any device, desktop, laptop, tablet or mobile phone.

On your PC:

Open chat.openai.com

Log in and start a conversation like you would in any chatbot.

You can use the shortcut Alt + Space (Windows) or Option + Space (Mac) to quickly open the ChatGPT window.

On mobile phone:

Download the ChatGPT app from Google Play or the App Store.

Log in and synchronize data with the web version.

Turn on Voice Mode if you want to speak instead of typing.

How to use ChatGPT at work? Practical examples

Artificial intelligence has become an indispensable part of modern business, and ChatGPT is a tool that saves time, increases productivity and brings new ideas.

In the SmartThink team, we use it every day and here are some practical examples to help you understand its real value.

Content writing and blogging with ChatGPT

For marketing teams, ChatGPT is the fastest way to get an idea off the ground. Instead of spending hours devising a title, introduction, and structure, all you have to do is ask a clear question.

Here’s an example from SmartThink’s practice:

When we blog about Google Ads strategies, we use ChatGPT to create a basic outline of the text, then elaborate each part through several prompts, while the final tone and SEO refinement is done by our team.

Result?

A 2,500-word blog that’s keyword-optimized, written in a consistent tone, and ready to post in half a day.

Without him, it would have taken at least one business day to complete.

Advantages:

Faster generation of ideas and drafts
Unique headlines and CTA suggestions
Automatic formatting (H1-H6, lists, bold)
Easy to adapt to style and audience

SEO optimization with ChatGPT

ChatGPT does not replace an SEO expert, but it helps and complements it perfectly. It can help with keyword analysis, writing meta tags and creating descriptions that meet SEO rules.

An example from SmartThink practice:

When analyzing client sites, we use ChatGPT to create a WDF-IDF keyword list, suggest phrase variations, and generate optimized meta descriptions for each page.

In this way, we save hours of work on analysis, and we shift the focus to strategy and implementation.

This tool is especially useful for local SEO (eg “catering Belgrade”, “wallpaper Novi Sad”), because it can generate relevant combinations of terms that would otherwise be missed.

ChatGPT vs Gemini or the fight for the throne of artificial intelligence!

In the world of AI assistants, there is a silent but fierce battle going on. ChatGPT and Google Gemini are fighting for the title of the most powerful artificial intelligence tool.

ChatGPT excels in natural language, creative writing, SEO content and data analysis, while Gemini excels in visual tasks, image generation and direct integration with the Google ecosystem.

However, all that we are talking about is subject to strong changes.

If you want a stable and intuitive tool for business, marketing and writing, ChatGPT is still a step ahead for now. But if multimedia processing and connection to Google services are important to you, Gemini takes precedence.

In practice, the best result is a combination of both worlds: ChatGPT for strategy and text, Gemini for visuals and automation.

The AI revolution has begun, and the choice between these two giants depends only on your needs and goals.

ChatGPT in Google Ads and Meta Ads ads

Writing ads that convert becomes much easier with ChatGPT. Just define the goal, audience and text length and it can generate dozens of title and description versions.

Example from SmartThink:

For a client selling luxury plaques, we used ChatGPT to suggest 30 titles of up to 30 characters and 20 descriptions of up to 90 characters.

We then selected the best ones and tested them in a Google Ads campaign.

CTR increased by 22% in the first 15 days.

Advantages:

Generates ads that comply with Google/META rules.

Saves time in the A/B testing phase.

It enables quick adaptation of campaigns to the market.

Data analysis and reports using ChatGPT

At SmartThink, we increasingly use ChatGPT as an analytical tool. It can read Excel spreadsheets, CSV files and text reports and then extract key data.

An example from SmartThink practice:

When analyzing the results of Google Ads campaigns, we feed the report into ChatGPT and request that it display “key metrics with explanation of trends and recommendations”.

The result is an automatically generated summary that gives our worker insight into performance without manual processing. It significantly speeds up the decision-making process and eliminates the possibility of human error.

But you should be careful, because even ChatGPT knows how to make mistakes.

ChatGPT for students, entrepreneurs and freelancers

ChatGPT isn’t just reserved for developers and marketing agencies. It can be an extremely useful tool for any student, entrepreneur and freelancer who wants to increase efficiency and save time.

ChatGPT helps students understand the material more easily, summarize extensive texts, write term papers and graduate papers or prepare presentations without wasting hours of research.

For entrepreneurs, it is like a personal assistant who writes offers, creates product descriptions, plans social media posts and helps communicate with clients.

Freelancers use it for idea generation, content creation, translations, and even writing code or designing prompts for AI images.

In all cases, ChatGPT becomes a tool that saves time, improves the quality of work and allows you to focus on what brings the most value, which is career and business development.

ChatGPT Plus in Serbia: What are the prices, payment options and advantages?

The ChatGPT Plus plan is also available to users in Serbia.

The price is 20 USD per month (about 2100 dinars) and allows access to the latest GPT-5 model, which offers:

Faster responses (up to 2x compared to the free version).
Ability to send images and files.
Voice chat (ChatGPT Voice).
Greater accuracy and fewer errors.
Option to create your own GPTs (eg “Your SEO GPT”).

How to pay for ChatGPT Plus from Serbia?

Although OpenAI does not have a direct payment in dinars, you can use:

Revolut card,
Payoneer account,
or a Visa/Mastercard card from a foreign currency account.

After activation, the subscription is automatically renewed every month. User experiences in Serbia are positive, and the most common payment method is via Visa/Mastercard card, and increasingly via Revolut account due to the simple conversion of currencies and costs.

Advantages and limitations of ChatGPT

Like any tool, ChatGPT has its advantages, but also certain limits that should be understood.

We will list, in our opinion, the most important advantages and limitations.

Advantages:

Speed and time saving: create quality content in a few minutes.
Versatility: can write, analyze, program, design and learn.
Affordability: The free version offers enough functionality.
Continuity: remembers the context of the conversation and adjusts the tone.
Creativity: helps generate ideas, titles and concepts.

Limitations:

Does not have access to private data (eg your Google Docs, unless you manually submit them).
It can be wrong, so-called. AI hallucinations are still present.
He does not always understand the local context (prices, legal regulations, and sometimes even the Serbian language).
It is not a substitute for an expert, but an assistant who gives you suggestions.

SmartThink advice:

ChatGPT is most effective when used in conjunction with human supervision. The best results are achieved when AI generates the foundation and a human adds context, style and emotion.

For now, it is, but that is also changing.

Saznajte kako koristiti ChatGPT u marketingu, poslu i svakodnevnom radu. Otkrijte praktične savete SmartThink tima o primeni AI u Srbiji.

How to use ChatGPT safely and ethically?

Like any technology, AI brings enormous opportunities, but also responsibility. When using ChatGPT in business or education, it is important to adhere to a few basic principles:

Do not enter confidential information, passwords or important documents.
Always check the facts before posting content.
If you use ChatGPT texts publicly, indicate that AI assistance is used.
Do not rely on his answers for legal, medical and financial decisions.

ChatGPT in the future, what awaits us?

The current development of OpenAI’s ecosystem shows that in the coming years we will have AI assistants working directly with your files, CRM, ads and website.

This means that ChatGPT will soon be able to:

Automatically writes and publishes articles on your site.
It connects to Google Ads and Meta accounts.
Creates real-time sales reports.
And even communicates with customers for you.

For companies in Serbia, this means the following: it’s time to prepare for the AI revolution in marketing and business.

The SmartThink team is already implementing ChatGPT in working with clients and helping them implement AI-assistants and many other capabilities into their processes.

ChatGPT FAQ (QA)

1. What is ChatGPT and what is it used for?

ChatGPT is an advanced artificial intelligence (AI) based chatbot that understands and generates natural language. It is used for writing texts, analyzing data, translating, creating ads, ideating and communicating, and much more. Digital marketing and automation tools are increasingly popular in business in Serbia.

2. Is ChatGPT free?

Yes, but to some extent. There is a free version of ChatGPT (GPT-4o mini), but it has limitations in speed and functionality. For advanced features such as file analysis, image generation, and voice chat, a ChatGPT Plus plan is available for $20 per month.

3. How to use ChatGPT in business?

ChatGPT is used in business to:

writing texts and blogs,
designing Google Ads and Meta Ads ads,
SEO content optimization,
data analysis and report creation.

4. How to write a good prompt for ChatGPT?

Best results are obtained when you give ChatGPT a clear context and goal. For example: “Write a 700-word SEO copy about luxury shoes for men, in Vi tone, with a focus on quality and craftsmanship.” The more specific the query, the more useful and relevant the answer will be.

5. How to pay for ChatGPT Plus in Serbia?

ChatGPT Plus can be paid from Serbia using Revolut, Payoneer or Visa/Mastercard from a foreign currency account. After payment, the subscription is automatically renewed every month. Until you break it off.

6. Can ChatGPT write SEO texts?

Yes. ChatGPT can write SEO texts, meta descriptions and blogs using properly structured keywords.
Combined with human monitoring and analysis (as done by the SmartThink team), it can significantly increase organic traffic and Google rankings.

7. Does ChatGPT speak Serbian?

Yes, ChatGPT perfectly understands and writes in the Serbian language, including Latin and Cyrillic. It gives the best results when the query is formulated in a natural way, as if you were talking to a real person.

8. Can ChatGPT generate images?

Yes, newer versions of ChatGPT (GPT-5 and GPT-4o) can generate and analyze images. You only need to turn on the option Add photos & files or enter a visual description, eg “Make a photo of a business woman using a laptop in a modern office”.

Conclusion: Stay one step ahead, use the power of ChatGPT and turn your ideas into results!

ChatGPT is much more than a “smart chatbot”. It is a tool that can become your personal assistant, marketer and researcher.

Of course, if you know how to use it properly.

Whether you’re a student, entrepreneur, marketing manager or SEO expert, ChatGPT can help you:

You create content much faster.
You analyze data more precisely.
You communicate more effectively.
You develop ideas that lead to real results.

Therefore, follow us on SmartThink.rs for more practical tutorials on artificial intelligence, ChatGPT and digital marketing.

Our goal is to help small and medium-sized enterprises in Serbia to use the full potential of AI technologies and improve their business.

Don’t let the competition overtake you!

Your place at the top of Google search doesn’t have to be a wish, it can become a reality faster than you think.

Contact the SmartThink team today and discover why our clients recognize us as leaders in the field of SEO optimization and digital marketing.

Together we can:

Increase your online visibility.
Bring new customers directly to your site.
Achieve excellent results very quickly.

Don’t forget, the first page of Google is not only reserved for the greatest, but for those who know how to conquer it!

And we know that path.

Together we will turn your digital potential into concrete success. SmartThink can be your partner on the way to the top of Google!

📞Call us now at +381 63 221 770
📧 Write to us at info@smartthink.rs

10 mistakes that make Google Ads not work

by Zoran Vulovic | Nov 14, 2025 | Blog

10 mistakes that make Google Ads not work

and how to turn them into profit immediately?

When you think “Google Ads isn’t working,” the problem is usually with the strategy, not the platform. Many business owners and marketing managers reach a point where they honestly conclude, “Google Ads isn’t working for us.”

“The budget is invested, the ads are active, the clicks are coming in… but the sales are lacking.

The good news is that this can be fixed. Google Ads is a powerful tool that can bring many times more sales for the same or less cost.

But only if the campaign is set up correctly, the measurement is precise, and the optimization is disciplined.

At SmartThink, we most often see the same patterns with new clients: keywords that are too broad without negatives, wrong bidding strategies, generic ads, poor “match” between the ad and the landing page, or worst of all, no tracking of results, so the campaign practically flies blind.

What many interpret as “Google Ads not working” is actually a series of small but costly mistakes.

Below you’ll find the 10 most common mistakes we encounter, with specific steps on how to fix each one and turn your Google Ads into a profit machine.

Well, let’s go in order:

Find out why your Google Ads isn't working and how to make your campaign profitable. Practical tips and solutions from SmartThink experts

Wrong choice keywords: "Clicks without intent"

Symptom: Lots of visits, few inquiries/purchases.

To make it easier to understand, we will give you three different examples. In the report, you see general queries like “shoes”, “curtains”, “moving” that attract curious people, but not buyers.

Why it happens: Generic words capture a whole spectrum of intent: informational, navigational, and commercial.

You want purchase intentions (eg “made-to-measure curtains Belgrade”, “men’s leather shoes price”, “moving apartments New Belgrade”).

How to check: Open the Search Terms Report and mark terms that are too broad or informative (how, what, free, DIY, forum, pdf).

How to fix:

1. Switch from Broad to a combination of Phrase and Exact match for keyword phrases with clear purchase intent.

2. Exclude informational queries by adding negative keywords.

3. Create themed ad groups with 5–10 closely related phrases (e.g. “custom curtains”, “Roman curtains”, “curtain holders”, all separately).

4. Use the same phrase the user is searching for in your titles and descriptions (relevance = higher CTR and lower CPC).

Mini example from practice: E-commerce footwear has shifted focus from “shoes” and “men’s shoes” to “men’s leather loafers price”, “Italian men’s loafers Belgrade” and similar long-tail phrases.

Result: +61% conversion and -32% CPC in 30 days.

Checklist:

Long-tail commercial phrases (location + product/service type + intent)
Phrase/Exact > Broad (at least initially)
Weekly search cleaning (Search Terms)

Wrong bidding strategy: "Clicks are cheap, but there are no buyers"

Symptom: Clicks are coming in, but the CPA (cost per conversion) is too high or conversions are almost non-existent.

Why it happens: Strategies like Maximize Clicks push quantity, not quality.

If you don’t have enough conversion data, automated strategies take the guesswork out of it.

How to check: Compare CPC, CTR, Conversion Rate, and CPA per campaign.

If CTR is growing but conversions are stagnant, look for the cause in the quality of traffic and choice of strategy.

How to fix:

1. If you have stable tracking and at least 30 to 50 conversions in 30 days, test Maximize Conversions or Target CPA/ROAS.

2. If you don’t have data, start manually with CPC and collect signals for 2 to 3 weeks, then switch to Smart Bidding.

3. Segment campaigns by value (e.g. more expensive services in a separate campaign with a higher Target CPA).

4. Set device bid adjustments, often mobile devices convert better for services (calls), and desktop for complex forms.

Mini example: A transport company had 200 clicks/month and 5 calls with Maximize Clicks. After switching to Target CPA = €10, it reached 22 calls/month with a similar budget.

Checklist:

Stable conversion tracking before smart bidding
Target CPA/ROAS for campaigns with history
Device and location bid adjustments

Low ad relevance or “The ad doesn’t tell the user what they’re looking for”

Symptom: Poor CTR and modest Quality Score. There are no keywords from the ad group in the ads, the messages are generic.

Why it happens: One ad tries to “hit everyone” and the result is that it doesn’t hit anyone right. Google values message relevance and post-click experience.

How to check: In the ad group, look at Ad Strength, CTR, Quality Score and Expected CTR. If they are in yellow/red, the ad is not “tuned” properly.

How to fix:

1. Include Dynamic Keyword Insertion (DKI) in the headline so that the ad “answers” the query.

2. Write 3 to 5 RSA variants (Responsive Search Ads) with different hooks. For example, warranty, delivery time, discount, local service.

3. Add extensions: Sitelinks (categories/services), Callouts (benefits), Structured snippets (assortment), Call/Location (if a local service).

4. Align the Unique Value Proposition with a realistic promise on the landing page (eg “Measurement and installation for free”).

Mini example: The curtain seller replaced the generic title “Decorative curtains for the home” with “Custom-made curtains Belgrade, free measurement and installation”.

CTR: 2,4% → 6,3% i –21% CPC.

Checklist:

DKI in the main title
3 to 5 RSA variants per ad group
Sitelinks/Callouts/Structured snippets active

Bad landing page: “Customer clicks and immediately leaves”

Symptom: High bounce rate, low time on page, few forms/calls despite solid CTR.

Why it happens: The ad leads to the homepage or to a page without a clear offer/CTA. The site is slow, poorly designed or doesn’t work on mobile.

How to check: GA4 reports: engagement rate, average engagement time, view to conversion rate. PageSpeed Insights: Load Time and Core Web Vitals.

How to fix:

One ad = one intent = one landing. Have the headline on the page repeat the promise from the ad.

Place one main CTA (visible "above the fold"): "Call now", "Request a quote", "Schedule a measurement".

Add evidence of trust: reviews, brands, number of projects, guarantees, deadlines.

Remove distracting links; focus your attention on the action.

Check the mobile experience (that's where a lot of problems lie).

Mini example: A local venetian blind service reduced the bounce rate from 78% to 41% in 14 days by separating the pages for “blind repair” and “mechanism replacement” and adding a CTA “Call a repairman today”.

Checklist:

Title = message from the ad
One primary CTA, visible immediately
Speed < 2s, mobile UX flawless

No Conversion Tracking So “Flying Blind”

Symptom: You have clicks and spend in your reports, but no or “zero” conversions because they are not defined correctly.

Why it’s happening: GA4 not set up or not connected to Google Ads, events not configured, calls from mobile not measurable.

How to check: In Google Ads > Tools >Conversions. Check if conversions are imported from GA4 and/or gtag/Tag Manager?

Are values and last logging displayed?

How to fix:

1. Connect Google Ads + GA4 + Google Tag Manager.

2. Define primary conversions: form submission, click call, purchase, “add to cart”, “book appointment”.

3. For calls, use call tracking (Google call forwarding or another tool).

4. Import GA4 conversions into Ads and mark “Primary” for bidding to learn from them.

5. Validate: conversion test + real-time in GA4 + Debug in GTM.

Mini example: The moving agency realized only after the implementation of call tracking that mobile ads bring 72% of inquiries.

They increased mobile visibility by +30% and doubled the number of clients in a month.

Checklist:

GA4 + Ads related
Primary conversions set up and visible in Ads
Conversion test done and verified

Ignoring negative keywords : “You’re paying for people who will never buy”

Symptom: The words: “free”, “used”, “pdf”, “manual”, “how to”, “forum” appear in the Search Terms Report.

Why it happens: Without negative phrases, Google casts a wide net, and you fund traffic with little or no commercial intent.

Pay attention, this is very important in every Google campaign!

How to check: Review the Search Terms Report weekly and flag irrelevant terms.

How to fix:

1. Create a shared negative list (eg “free”, “used”, “used”, “pdf”, “how-to”, “forum”, “diy”).

2. Add a brand of negative keywords if you are coming up on competitor queries that aren’t converting.

3. For specific campaigns, add thematic negatives (eg “repair” if you are selling new).

Mini example: An electronics store was spending close to 16% of its budget on “free manual”, “manual pdf” and similar terms.

After negative keywords, CPA dropped 23% and budget was redirected to profitable queries.

Checklist:

Shared negative list active in all campaigns
Weekly review of new negative keywords from search terms
Special negatives for themes/product lines

Bad account structure: “Can’t do everything in one campaign“

Symptom: One campaign, many ad groups and dozens of unrelated keywords.

Ads don’t know “what is what”, the algorithm gets confused and therefore the results vary.

Why it happens: “Jump Start” without a plan. Structure is the key to both relevance and algorithm learning.

How to check: Browse the hierarchy: Campaign → Ad groups → Keywords/ads.

Does each ad group have one theme and coordinated ads and landing?

How to fix:

1. Separate campaigns by services/products, locations, values (eg each product line or service separately).

2. Build ad groups by intention/topic (eg "leather moccasins", "winter moccasins", "sale moccasins").

3. In each ad group, place 5 to 10 closely related phrases and 3 to 5 RSA ads.

4. Each ad group should have a separate landing page, if possible (or at least a different block/section).

Mini example: A logistics company divided the generic “moving” campaign into: “apartment moving”, “company moving”, “furniture transport by van”.

Conversions: +43% in 40 days, CPA: -16%.

Checklist:

Campaigns by value/service/location
1 topic = 1 ad group (5 to 10 KW)
Related landing and messages in ads

Insufficient analysis: “We have clicks, but sales are not growing”

Symptom: You rely on “feel”, watch CPC and CTR, but you don’t know which terms, ads, devices and hours of the day bring you money.

Why it happens: GA4 is rarely opened, and Ads reports are not analyzed deeply enough.

How to check: In Reports (Ads) and Explorations (GA4), see conversions by: device, location, hour/day, demographics, landing page, query. Look for the 80/20 rule.

How to fix (steps):

1. Introduce a weekly routine: 30–60 min analyze (Search Terms, Auction Insights, Devices, Locations).

2. Turn off “black holes” (non-converting devices/locations/hours) and redirect budget to segments that deliver results.

3. Set up custom columns (eg Conv. Value/Cost, ROAS) and alert rules/scripts.

Mini example: We discovered that 74% of bookings for beauty salons come between 6-10pm.

By limiting impressions to those hours, CPA dropped 27% and bookings increased 22%.

Checklist:

Weekly analysis from 30 to 60 min
Device/Location/Hour bid adjustments
Custom columns + rules for alarms

Ignoring Mobile Users: “Everything is great on desktop…but actually more than 70% of traffic is mobile”

Symptom: Forms are easy to fill out on desktop, but non-existent or difficult to fill out on mobile.

Call-to-action is a small, slow site, too many fields.

Why it’s happening: Mobile first is not a priority here, even though the majority of clicks are from phones.

How to check: GA4: in the Device category, check the conversion rate and engagement of mobile users.

PageSpeed Insights for mobile.

How to fix (steps):

Mobile CTA big and sticky ("Call", "Send Inquiry"), visible immediately.

Shorten the forms (name, phone, e-mail and one choice).

Test click to call and call only ads for services.

Optimize images and scripts (lazy load), aim for no more than 2 seconds to load the page.

Mini example: Restaurant just added “Book a place by calling” on mobile (sticky button).

Seat reservations via mobile phones increased by 40% in the first month.

Checklist:

Sticky CTA on mobile
Short forms, autofill enabled
Call only for urgent/service activities

“Set and forget”: without constant optimization, a Google Ads campaign will not work for long

Saznajte zašto Vaš Google Ads ne radi i kako da kampanja počne da donosi profit. Praktični saveti i rešenja od SmartThink stručnjaka — Title

Symptom: The campaign went well for a month or two, then the performance drops. Competitors change their messages, you don’t.

The market changes, you don’t.

Why it’s happening: The algorithm and auction are dynamic.

If you don’t test headlines, CTAs, offers and landing pages, you’ll lose auctions and pay more over time.

How to check: CTR, CPA/ROAS trends, Auction Insights (new competitors, higher overlap), QS decline.

How to fix:

1. Two-week rhythm: review of results and micro-optimization (negative words, bid adjustments, ad variants).

2. Monthly A/B test: titles, descriptions, CTA, hero section on landing.

3. Quarterly review: account structure, bidding strategies, budget locations, new topics/offers.

Mini example: An online furniture brand introduced monthly A/B tests (headline + CTA).

In 3 months ROI +24% without increasing the budget.

Checklist:

Biweekly optimizations
Monthly A/B test of ads and landing pages
Quarterly review of strategy and structure

Bonus: 7 more quick “diagnoses” when you think Google Ads isn’t working well

1. CTR < 3%?

Probably an irrelevant ad or a bad ad group.

2. Quality Score 5/10 or lower?

Fix relevance and landing.

3. Many impressions, few clicks?

Bad title, no keyword or weak hook.

4. Lots of clicks, zero inquiries?

Landing and measurement under the microscope, test the form and CTA.

5. Conversions only at night or on weekends?

Limit your bid to when they’re actually buying.

6. Cost per conversion jump?

Maybe a new competitor, check out Auction Insights and refresh your bid/ads.

7. Empty Conversion Report?

Tracking is not set or not imported into Ads.

Quick FAQ: the most common questions we've received when Google Ads isn't working

1. How long does it take for Google Ads to work "properly"?

If the tracking is set and the campaign is well structured, the first stable signals are seen in 7 to 14 days, and learning smart bidding strategies in 2 to 4 weeks (depends on the volume of conversions).

2. Is Google Ads better than SEO?

It’s not “better”, it’s a very different approach, but it complements it. Ads bring quick results and offer tests, SEO builds a long-term organic channel. They always work best together.

3. What is the minimum budget?

It depends on the industry and CPC. It is essential that the budget allows for enough clicks to learn (often 10 to 20 times the expected CPA per month).

4. How do I know I hit the right audience?

See conversions per query/device/hour, not just clicks. If calls/forms are coming from your core segment, then you are on the right track.

5. Why did my clicks cost more?

The auction is dynamic. New competitors, seasonality, QS changes. The solution is to refresh advertisements/offers, fix the landing page, optimize bidding and negative words.

Conclusion: How in 14 days from Google Ads not working to Ads bringing profit?

Day 1–2:

Audit: structure, match types, negative words, ads, extensions, landing and speed.
Set up or validate GA4 + GTM + conversions (forms, calls, purchases).

Day 3–5:

Restructure campaigns and ad groups (topics, locations, intents).
Write 3 to 5 RSA variants per ad group + extensions.
Create/optimize a landing page with a clear CTA.

Day 6–10:

Carefully add negative words and follow Search Terms.
Device / Location / Hour settings based on the first signals.
If there are enough conversions, do the Maximize Conversions/Target CPA test.

Day 11–14:

A/B test of the title/CTA, then the final “tightening” of the landing page.
Report: what’s working, what’s not and plan for the next 4 weeks.

When Google Ads doesn’t work, SmartThink turns it into a profitable channel!

If you recognize yourself in any of these mistakes, that’s good news, the potential is huge. With precise measurement, clear structure and disciplined optimization, Google Ads can become the most profitable channel in your marketing mix.

That’s exactly what SmartThink does!

We do not “launch” campaigns, we run them. From strategy and structure, through creative campaigns, to advanced analytics and A/B testing of landing pages.

Our team systematically turns budget into measurable sales growth.

If you think we can help you, contact us today:

Phone: +381 63 221 770
Email: info@smartthink.rs
Web: www.smartthink.rs

Schedule a free Google Ads campaign analysis and proposal today, the SmartThink team is at your disposal!

How to use ChatGPT?

How to use ChatGPT?

The complete guide to 2025.

ChatGPT has become synonymous with artificial intelligence in everyday life and business. From the moment the company OpenAI launched it, it changed the way people write, research, learn and communicate.

Today, it is used by more than 700 million users per month, and in Serbia it is one of the most popular tools for digital marketing, content creation and automation of business processes.

If you’ve been wondering how to use ChatGPT and how it can improve your business, then this guide was created just for you.

Below you will find out how ChatGPT works, how to use it on the web and on the phone, what are the most practical applications in business, as well as concrete examples from SmartThink practice that will help you understand its full power and potential.

What is it ChatGPT and how does it work?

ChatGPT is an advanced AI chatbot developed by OpenAI, which currently uses the GPT-5 language model to understand and generate natural language. In other words, it is a digital assistant that can write texts, translate, create images, analyze data, search the Internet and much more for you.

And in fact, all with the help of simple text queries, known as prompts.

What are the key features of ChatGPT?

Answers questions and writes texts (essays, blogs, emails, ads).

Analyzes data from tables and reports.

Generates images and explains their elements.

Searches the Internet for the latest information.

Assists in programming and writing code.

It can use voice and recognize images.

ChatGPT currently exists in several versions, but the most famous are:

Free version (GPT-4o mini) – limited but sufficient for daily use.

ChatGPT Plus (GPT-5) – faster, more accurate and able to use images, voice and files.

ChatGPT Enterprise – version for companies, with additional security options.

How to use ChatGPT? Step by step

It only takes a few minutes to get started using ChatGPT.

That process begins as follows:

1. Create an account

Go to chat.openai.com and click Sign up. You can register with a Google or Microsoft account or by using your email address.

After verifying the phone number, the system will immediately let you into the application.

2. Select version

If you use the free version, you can get started right away. If you decide on ChatGPT Plus, the monthly subscription is 20 USD (about 2,100 dinars), and you can pay it via Revolut or Payoneer card from Serbia.

3. Start with the first prompt

In the message field, write your question, for example, “Write a plan for a blog post about the benefits of digital marketing.”

“ChatGPT will generate a complete text proposal, complete with structure and ideas, within seconds.

4. Try additional features

In addition to classic typing, you can:

Add images and files (Excel, PDF, Word) for analysis.

Use voice commands if you have a microphone.

Search the Internet with the Web browsing option.

Create your own custom GPTs (eg “Your Copywriter GPT”).

Tips for writing effective prompts

The quality of the answer directly depends on the quality of the query you ask.

That’s why it’s important to learn how to write a good prompt.

Here are two practical examples:

Bad prompt

“Write a text about marketing.”

Better prompt

“Explain what SEO is and how a small business in Belgrade can use site optimization to attract local clients.”

Bad prompt

“Explain SEO.”

Better prompt

“Write a professional text of 500 words about digital marketing for small businesses in Serbia, in pro tone, with examples from practice.”

SmartThink advice:

The more context you provide (target audience, tone, length, goal of the text), the more relevant and useful results ChatGPT will provide.

How to use ChatGPT on phone and computer?

You can use ChatGPT on any device, desktop, laptop, tablet or mobile phone.

On your PC:

Open chat.openai.com

Log in and start a conversation like you would in any chatbot.

You can use the shortcut Alt + Space (Windows) or Option + Space (Mac) to quickly open the ChatGPT window.

On mobile phone:

Download the ChatGPT app from Google Play or the App Store.

Log in and synchronize data with the web version.

Turn on Voice Mode if you want to speak instead of typing.

How to use ChatGPT at work? Practical examples

Artificial intelligence has become an indispensable part of modern business, and ChatGPT is a tool that saves time, increases productivity and brings new ideas.

In the SmartThink team, we use it every day and here are some practical examples to help you understand its real value.

Content writing and blogging with ChatGPT

For marketing teams, ChatGPT is the fastest way to get an idea off the ground. Instead of spending hours devising a title, introduction, and structure, all you have to do is ask a clear question.

Here’s an example from SmartThink’s practice:

When we blog about Google Ads strategies, we use ChatGPT to create a basic outline of the text, then elaborate each part through several prompts, while the final tone and SEO refinement is done by our team.

Result?

A 2,500-word blog that’s keyword-optimized, written in a consistent tone, and ready to post in half a day.

Without him, it would have taken at least one business day to complete.

Advantages:

Faster generation of ideas and drafts

Unique headlines and CTA suggestions

Automatic formatting (H1-H6, lists, bold)

Easy to adapt to style and audience

SEO optimization with ChatGPT

ChatGPT does not replace an SEO expert, but it helps and complements it perfectly. It can help with keyword analysis, writing meta tags and creating descriptions that meet SEO rules.

An example from SmartThink practice:

The AI revolution has begun, and the choice between these two giants depends only on your needs and goals.

Speed and time saving: create quality content in a few minutes.