I started with a clean profile: I never log in to YT so it’s just using a local cookie you can always clear to start over.
Anyways, I just searched a few sciencey things to feed the algorithm and now I’m getting loads of crazy fake “science” and conspiracies and the rest is all extremist right wing bullshit.
YouTube is getting useless.
Try to start over. Go to a new place, try to meet new people, etc. I was in a very similar situation and just leaving it all behind helped.