Same for me, when i use youtube on my mobile i am flabbergasted by the amount of ads and 20 minute promo programs. Why and how can you watch that without a add blocker?
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).