I don’t know what sponcer block is, like when the actual video itself has sponsored ads that the creator reads or something, it blocks them? I don’t think anyone I watch is big enough for sponsors like that so I’m not sure, I’ve never seen it… so maybe?

I’ll definitely check out adaway though, that sounds neat!

I’m not denying the usefulness of sideload apps, and I’ve considered emulation on my future phone and that may influence me not buying an iPhone next time.

But to answer your (rhetorical haha) question, I use the brave browser and don’t have ads in YouTube through that, and use Apollo for browsing Reddit. The only time I would see an advertisement on my phone is if I decided to play one of those crappy mobile games that throw ads at you (I don’t know if there’s a way to block those, but those type of games aren’t really for me so it’s not super important)