I regularly get recommendations for extremist content on Youtube, even though it's not thematically related to anything I already watch. The most harmless ones are Jordan Peterson and Andrew Tate videos, but not too far behind is conspiracy stuff, fundamentalist religious channels, "spiritual" videos about faith and ghosts and living the Matrix. Like you, I used to click on the options to little effect, so now I just…
Yes. This is exactly how personalized advertising works.
Advertisers pay to target specific groups/cohorts in a statistical manner. Sorry that you don't like your cohort but this is a well known and unavoidable byproduct of their statistical approach.
It's like when a friend has cancer. You search for it on Google and the next thing you know, you're bombarded with ads for quack remedys.
The only effective solution --- avoid those who play this game.
Advertising doesn't have to work this way. There are alternatives --- such as basing it strictly on expressed interest. If you search for cancer, you should expect some ads related to cancer. What you shouldn't expect is these ads tracking you all over the internet.
Advertising works but there is not much independent evidence to show that personalized advertising is really any more cost effective.