There are several factors to consider for effective contextual advertising
Targeting - fine-tune your targeting so that your ads are shown to those most likely to be interested in your product or service. This could include geographic parameters, interests, age, and other demographics.
Keywords - choose the right keywords that accurately match your audience's needs. Use tools like Google Keyword Planner to find suitable keywords.
Create attractive ads - make your ad bright, short, and to the point. The headline should be attractive, and the description clear, so that the user immediately understands what you offer.
Analysis and optimization - after launching a campaign, regularly monitor its performance. Use analytics to evaluate metrics such as CTR (click-through rate) and conversions, and adjust the settings.
Budget - set a budget that will meet your goal and ensure that your ad receives the attention it deserves. Start with a small budget and increase it as you receive data, I can recommend ve' studio
https://pbb.design/en/...s/contextual-advertising/ for help