I have not see any better recommendation algorithms.

My solution is just to use multiple accounts for different queries, and a private browsing account for general YouTube browsing.

If I find something remarkable, I can always copy the link into my main account for watch history/recommendations.

I just wish I could toggle the "Topic" tags at the top of the screen. I accidentally clicked a video link on an Tesla site and now fully 25% of my home page is Tesla related. If I could turn off the tag, then my homepage could return to normal, or at least I would expect it to.