One of the best places where you can add Google AdSense ads on your Blogger website is below the post title. This will make ads will appear above the fold area so that the user will be able to see them without scrolling down.
Placing Google AdSense ads below post title will also help you to generate more revenue from your Blogger website as it will increase the click-through rate (CTR) and cost per click (CPC) of the ads.
Which ad size you can place below post title?
Responsive ads - We recommend you to use responsive ads below post title as they will automatically adjust their size, appearance, and format to fit available ad spaces.
Once you have selected the ad size as per your needs, go and create a new ad unit in AdSense. Simply, login to your AdSense dashboard and click My Ads tab > New Ad Unit. Now give it any name and select the ad size. After this, tap the "Save and get code" button and then copy the ad code.
How to Add AdSense Ads Below Post Title in Blogger post
Note :- If you see this code one or more times, Select the code that appears in the last.
<b:if cond='data:blog.pageType == "item"'> <div style='clear: both; text-align: center; margin: 10px;'> <!--your AdSense code here--> </div> </b:if>