how to do a hard reset on iPhone 13

Perform a Forced Restart on the phone. Follow the instructions very carefully, as this is a bit tricky. You may need to repeat this several times.

Force restart iPhone - Apple Support

There are only 2 possible results when you perform a Forced Restart:

1) The phone returns to normal operation

2) There is a hardware problem with the phone that will need attention at the Apple Store (make an appointment) or at an authorized Apple Service shop

Find Locations

If your phone is not charging from the charger but will charge from the computer, then there is nothing wrong with your phone. Either your charging cube or cable have gone bad. Or possibly the wall outlet you use to charge is connected to a switch and the switch is turned off.