[anonymousab]

For Android, I just use the standard YouTube mobile site with fennec Firefox and ublock origin. Seems to work fairly well on my old S6 for 1080p60 content and below.

I suspect that's not very battery efficient though.

[djeiasbsbo]

I highly recommend using invidio.us (or another invidious instance) instead.

Also, as an ad free and non tracking twitter alternative there is nitter.net (other nitter instances exist as well).