In Godot you can just add some TouchScreenButton, bind them to the functions you already have for throwing the donuts, set them to “only display on mobile”, and generate a keystore using the keytool command, and include the .jks file into android export screen under Godot, and export as a Release build. You’ll also need to install adb.
Having a keystore set up and the game exported as release, you’re allowed to post the apk anywhere you want(even if you don’t have or don’t want to pay google developer license)
I don’t know about exporting for IOS
