Non-Personalized Google Ads by Proportionate and Reasonable

Opt out of personalized ads. Take back some privacy and ask the Google AdSense advertisement network to not record your online activities and only serve you ads relevant to the current page. Stop “remarketing” and other stalker ads on Google's ad networks.

You'll not see fewer ads with this extension installed (it's not an ad blocker) but you’ll see fewer ads targeted at you personally. Learn how non-personalized ads from Google work: https://support.google.com/adsense/answer/7670312