FreeTube has an android fork.

https://github.com/MarmadileManteater/FreeTubeAndroid/releases

Always on vpn, no Google play services, and one of:

New pipe / pipe pipe

Grayjay

Firefox (ironfox) plus unblock origin

Flow by far

Pipepipe to store the subscriptions and Seal to download the video locally with sponsorblock. No buffering and no ads

A what?

Grayjay

Best would be using Invidious or piped instance on a browser.

Second best is libretube or newpipe app.