Depends on what you're searching, there is also the perspective that YT is a vast library of content that would never have appeared on TV, such as lectures, talks, conferences, courses, demos, gameplay, cooking, home improvement, product reviews, obscure music. It's the library of Alexandria of modern age. I would be devastated if I lost access to it. Wikipedia and Arxiv are complementary collections.

(In Newpipe you can subscribe to creators' channels, see the comments and their other videos. You just can't comment from there.)

That's just the algorithm. There's still some amazing content on Youtube, but the algorithm will always try to offer you junk food. There are various ways to avoid this, but it becomes a problem for ditching Youtube. The positives are too enticing, and don't yet, at least for me, outweigh the negatives.

I generally hate suggesting a browser plugin to solve a problem with a service, but give this a try: https://github.com/SeinopSys/YTMySubs

You can no longer visit the home screen. Any attempt always redirects you to the subscription view. And from there, it simply becomes a matter of only subscribing to worthwhile channels. I've found it improves my Youtube addiction quite a bit.