If you're on Android, there's NewPipe, a fantastic YouTube client that brings all the benefits of YouTube Premium: no ads, downloads, listen with screen off, and picture in picture.

NewPipe also supports other services such as SoundCloud, MediaCCC and PeerTube right out of the box. The killer feature for me is that you can make up playlists containing media from different sources (which I use for playlists containing music from both YouTube and SoundCloud).

(I'm not involved in NewPipe, except being a very happy user).