I keep getting the error 'YMusic is not responding'. What is the best way to address this?

Force stopping YMusic is the first step. If the issue persists, clear the app's cache. If clearing the cache doesn't work, clear the app's data (note: this will reset the app). As a last resort, uninstall and reinstall the app. Check if other apps are also experiencing similar issues, which might indicate a problem with your device's operating system.