My only problem is trying to use it with the android app. I have to manually sync it like all the time which is a pain in the ass when I forget to do it before I go out the door and my shopping list isn’t update. That and it won’t sync files I create on the phone to the server

Right? I’ve been using NextCloud/OwnCloud since ~2015. It’s a very standard LAMP app, nothing fancy going on at all. Give it enough memory and you’ll never have any problems, same as any other web service.