If there's low volume in one AirPod Go to Settings > Accessibility > Audio/Visual > Balance, and make sure the balance is set in the middle.

To turn vibration on or off: (1) Slide two fingers downwards starting from the top of the screen. (2) Press the sound mode icon the necessary number of times to turn vibration on or off. (3) Press the Home key to return to the home screen. Or: Go to Settings > Sounds and Vibration > Vibration Intensity and make sure the switch is turned on. If your phone is in silent mode, it will not vibrate.

Yes, the screen for your laptop is repairable If you want to replace the screen by yourself here is a link that could help you: https://www.youtube.com/watch?v=9ZPlavth...