I can only understand the concern if it related to how many the chat room and users are mostly created in offical Matrix instance instead more be self-hosted and even that is a reach

I hadn’t tried them as I’m more type person to store stuff on my USB hard-druve (Not ideal but it’s doable) but I have seem people on subbredit called something like r/KodiAddons (and also there’s a community of it in Lemmy but seems dead) use some repo that has plugins to allow you to view pirated shows and films.

So in theory, yes you can as long as there’s some video plugin to allow to do so but it just finding the repo that’s legit. Sorry I can’t help you as much but hope it better than no answer at all

I’m currently using GrapheneOS on my Pixel phone I brought secondhand so think I should (for now) be okay?

Otherwise, Linux phone looks interesting but it just relearning both another OS (like iPhone users trying to learn Android and vice versa) and also just I have low income so buying new tech is just expensive.

I don’t want to throw myself a deepend to an OS that I not as familiar with beside on my desktop and Raspberry Pi. Personally, I prefer to know what’s there before I just go blind so at least I can manage my expectation than expected it to do 1:1 stuff that I do on my phone right now.