For me the biggest problem is Youtube. The other solutions are not in the same level of quality/quantity.
DuckDuckGo feels way better as a product to me (using sometimes the bang to use google in privacy mode). And ProtonMail is good enough.
Yes, it has subscription support and you can import/export that list to keep it backed up.
It also has a TON of features, like PiP, background play (for video and audio), downloading, and much, much more.
Ivory [1] might be the closest iOS equivalent, and Motionbox [2] and FreeTube [3] the closest desktop equivalents.
[0]. https://newpipe.schabi.org/
[1]. https://apps.apple.com/us/app/ivory-video-player/id129434748...
I am nervous that Google will find a way to kill it if it gets big enough. It's not exactly an alternative to YouTube, it's more of a band-aid.