Apple Music may not be working for several common reasons: unstable internet connection, issues with your Apple Music subscription or Apple ID, software glitches in the app or device, outdated software, corrupted app data, or even server outages on Apple's side. Restarting the Apple Music app or your device, checking your subscription status, ensuring an updated app and operating system, clearing the app cache, and verifying the Apple Music server status are effective troubleshooting steps. Additionally, issues like low device storage, VPN interference, or regional restrictions can cause playback problems. If problems persist, reinstalling the app or reaching out to Apple Support may be necessary.