I often use:

Not on mobile, but desktop:

• Enhancer for YouTube, I like it for having the “expand” making the screen bigger also cinema mode, toggling end cards off, boost volume — you can also take screenshots.

• uBlock Origin, of course

• SponsorBlock, which is a big extension that will auto skip sponsor readouts, selfpromos, and a lot of things YouTubers often do (sponsors, self promos, interaction reminders like liking and subscribing, intermissions, intros, previews, jokes, etc - you can choose to skip them or highlight them in the videos) it’s backed by community response, anyone with the extension can set up something to skip and share with everyone. Highly recommend if you’re tired of people pausing the video to talk about raycons or manscaped lol