Newpipe is the best UX and paired with VPN it's a good balance of privacy and ease of use. There is also a fork that includes sponsorblock
Libretube is technically best privacy since it proxy all data through Piped servers, but the UX is awful! Seriously it never works now!
There is also Freetube Android and also Clipious, which uses Invidious tech, and you can optionally proxy all the data connections through the invidious servers that the apps includes, but the speeds will very. sponsorblock included as well. I think these two apps will be your best bet, but if you find that the UX is not to your liking, turn off the proxying, or switch to newpipe