Settings > Instance > Disable instance proxy.

LibreTube is meant to be used with a YouTube piped (which is a different thing than NewPipe) instance, which proxies the video stream. It’s very nice in theory, but in practice, the instances get blocked constantly. Disabling this option will make your device connect directly to YouTube (which leaks your ip address to YouTube) and make it work the same way NewPipe works

You can also look into invidious instances, if you want to avoid downloading an app.

https://invidious.io/

EDIT: Or piped, https://piped.video/

It’s funny when your first sentence is taken literally. You would rather stop watching YouTube and then, be exposed to terrible ads.

it’s “than”, not “then”. To know which one to use, prononce it like if it rhymes with “ban” - instead of “hen” - in your head, you’ll know which one is correct