So i have learn android studio course (kotlin) for the basic.I've been practicing for some things, like recyclerview, ViewModel, bottomsheet, fragment, nav view,Firebase auth, intent and some other basic stuff.right now I'm confused what to do next, if it continues I don't know what to learn next, I know there's still a lot of things to learn, it's just that I don't know what it is, I'm trying to find out what apps a beginner should make like me, but most of the suggestions are still far from my abilities, such as making a calculator. So can you give a little advice to beginners like me, thanks