I think highly of YouTube. In fact I consider it one of the more useful elements of the internet. If I want to learn how to fix an obscure fault in a 3D printer, or find vintage photos of Newcastle England, or dig up a half remembered poem read by JRR Tolkien, well its all there.
My problem with it is the crap it recommends to me. Gee YT, no thanks. I'll simply look up the things that interest me.
YouTube of course sees it otherwise. They are owned by Google. And they make money by selling information about me to advertisers. Things I click on.....straight away get put into their database on me.
The algorithm by which YouTube figures out my interests, and then sells them to hucksters and villains, is complex and secretive. And as I've mentioned a time or two, about a year ago I set out to break it.
First of course you disable the Watch History function. I mean, why make it easy for the Tubers?
You then get a scattergun assortment of what YouTube thinks you are or should be interested in. Some are reasonable guesses. Food. Cars. Disgusting videos of veterinarians draining horse abscesses. What? Oh, I'm getting ahead of myself.
Now this is the time consuming part. While doing other things, like listening to a ball game, pull up the YouTube page and just start rejecting things. There are various functions to do this. The blanket "Do not recommend this channel" and the more focused ones proclaiming things to be scam, child abuse, disgusting, etc. Refresh and repeat.
And nothing else.