I have the same issue, and that's affecting my productivity a lot. I've even disabled history from my entire Google account, so that I'm not suggested videos. But that's still not working. Fuck you Google, you're like that enabler friend who will force his alcoholic friend to drink even if he's suffering from gangrene.

I disabled shorts and went through my front page and said to not show me stupid addictive content and then also took two weeks off. I also used libredirect addon on Firefox to redirect all YouTube links to inviduos so that if a link somewhere took me there I didn't get sucked right back.