Please try the below:
1. Clear all background apps.
2. Restart the phone.
3. Check whether you can download the music lyrics file.
4. Check the current network environment.
5. Uninstall the music player and reinstall it.
6. Check whether the phone is updated to the latest system version. If not, update it.
7. Back up your data and restore the phone to factory settings.
If the issue persists, contact our Customer Support for further assistance.