Then I guess you need to go to YouTube website, go to the channel, look for what playlists they have, then go on NewPipe and look for it.

See how much of an inconvenience it is compared to just being able to pull up all channel playlists in the app?

Sure, you can type “(channel name) playlist” in the search bar, but then all those playlists are all mixed in with regular video results as well. Noticed that not all of the playlists shows up doing that too.