Add features in my Android App Created on Android Studios

I need to add some of the features in my Screenrecorder Android App those features are :-

1) Floating button with enable disable in setting

2) Orientation option in setting (Auto, Landscape, and portrait)

3)Screenshot

4) Internal audio option in setting

The app was built by looking at the rules and permissions of Android 12.
Please get the play store link here https://play.google.com/store/apps/details?id=com.pixel.tgrecorder