As for Android, I think the real magic happens when you just realize your phone is another computer and you can do normal computer things with it. It just starts unlocking so many doors. One thing I like to do is have my desktop sit behind my TV. Big screen for movies and games. For everything else, there's ssh. Your phone is just another terminal in that environment. But the modern version of a terminal means your local machine can actually do meaningful things too. Tbh, it's really what the big tech companies are doing too, they just pretend they aren't.

Also, since you're new to Android check out revanced. I'm not sure if you need this on graphene but you can recompile apps. Mostly used for removing ads but there's more to it than that.

I'm hoping one of these days we can just treat computers like computers. Stop creating these walled gardens. It really slows down innovation and honestly, I believe the big companies would make more money doing it. After all, their whole business sits on top of open source work. The computer is nothing without the program. The smart phone is nothing without the app. Why can't we recognize that the success of these machines is that they're environments. You can't create a product for everybody, but building environments doesn't have the same limitations