[Zancarius]

I've had a similar experience. Anything I don't want to litter my recommendations I view from a private window. If I accidentally click on something I don't particularly want to watch, I remove it from my history.

It's not perfect, because as you go down the YT rabbit hole, you'll invariably get fed "top ten X" type clickbait videos if there's anything that's remotely related to what you're watching, but it does reduce the noise level.

Curating your subscriptions also helps.