Sound of notifications working but media of apps not

1 → All volumes are maxed out 2 → My device has "Do Not Disturb" mode disabled 3 → My device has "Battery Saver" mode disabled My notifications work perfectly sound, but when I try to play any kind of media in any app, no sound comes out on my device. Is there anything that can be done in such cases to try to resolve the issue? Any option in developer mode, anyway... Here are his specs: