If you are using the latest version of YouTube Music Premium on Android, you might encounter issues like app not installed or playback pauses.

Key Troubleshooting Steps:

MicroG Compatibility: Ensure your MicroG is updated to the latest build to avoid sign-in loops.

Battery Optimization: Go to App Info, then Battery, and select Unrestricted so the music does not stop when the screen is off.

Architecture Check: Make sure you are using the correct ARM64 build for your device.

For a complete step-by-step fix and the most stable build, check out the detailed resource here:
YouTube Music Premium Troubleshooting