That doesn’t seem like a bad start to me, but I haven’t read it thoroughly. I also recommend checking out the official Android Studio beginner’s guide: https://developer.android.com/get-started/overview
Alternatively, you can use wrappers like Flutter, React Native, or the Ionic framework if you think you might want cross-platform or web capability later, though that adds a lot of overhead that isn’t always the best choice.
As an asexual woman who loves badminton, can confirm. It’s definitely not a sport that can involve running around in tight clothing getting sweaty.