Failed to gain audio focus

I expected the following:

Audio Focus Request Success: By handling the audio focus request more rigorously, your app should successfully gain audio focus and control the audio streams related to phone calls.
No Audio Conflicts: With proper audio focus handling, the app should avoid conflicts with other audio-related apps (e.g., media players or other voice call apps) that might otherwise interfere.
Consistent Call State Listener: The PhoneStateListener would listen for call state changes without running into issues or crashes due to uninitialized properties or permission issues.