For Android:
Newpipe or Tubular (Newpipe X Sponsorblock fork)
VueTube (still under development, the team is working slow because it's pretty small, they have a few time to spend on it and they need devs, it's a complete FOSS alternative to Vanced, and will have most of its features including optional Google log in with interactions)
If you need to login and have a full YouTube experience: Revancedapp
I tried it and I still prefer Newpipe, but it's cool to have a lot of alternatives for everyone!