Have you tried Brave?

Brave strips out the ads that the creators put on their site, puts their own ads there, then gives the creators some of that money if and only if the creator realizes they have to sign up for Brave's cryptoshit. It's straightforwardly the kind of racket that would get your knees broken if you tried to do it to somebody in real life, but "it's ok because it's on computers". All the flak is deserved.

The official client is absolutely terrible. But, I've found a much better solution: I tell all my customers Microsoft Teams doesn't work for us and they'll have to pick something else.

Kudos for at least trying to address this, MS should hang their head in shame, this is not the hardest problem to solve these days. If we could do it in 1995 they should be able to do it 30 years later.

Replacing YouTube with a drop-in substitution is obviously impossible, but it's not that hard to replace with a different hobby. I've never used YouTube to any significant degree, and manage pretty well without it.

Brave is my favorite, though I prefer Firefox on my laptops. Brave mobile: excellent ad-blocking, download videos for offline viewing. No tinkering needed to make it excellent. It’s excellent out of the box.