Restarting can fix freezing, slowness, sound issues, and many app problems.
Press and hold the Side button
When “Slide to power off” appears, slide it
Wait 30 seconds
Press and hold the Side button again until the Apple logo appears
Press and release Volume Up
Press and release Volume Down
Press and hold the Side button until the Apple logo appears
This is safe.
60-Minute Help Session — $70 - Paid at booking