Thank you for this, still new to nostr so I will have to get my head around everything
Generally, you should check out this page: https://github.com/aljazceru/awesome-nostr#clients
There are no clients in the Android app store AFAIK but if you’re able to load an APK into your phone and install that, check out Nostros (https://github.com/KoalaSat/nostros). Works pretty well and has the basic features.
There is also Nosky (https://github.com/KotlinGeekDev/Nosky) but there is no pre-built APK yet so you’d have to compile it yourself.
Discussion
There is a lot going on in the nostr space atm! Don’t hesitate on asking questions, a lot of great people on here that are happy to help you out