I used LibreTube for a while, and I really preferred many things about its GUI and recommendations, but I switched back to NewPipe because I found myself having to fiddle with it too much to make it work. For example, if one instance isn’t working it’s easy enough to switch to another in settings, but it doesn’t remember your login details for your NewPipe accounts, so I felt frustrated that I’d then have to launch Bitwarden and copy/paste my logon info every time.
If you’re not concerned about your NewPipe accounts and only want it local to your device, it’s not a problem, but I like to try to make things like my history sync between my phone and in browser on PC. (Probably not ideal for privacy, I admit.)