Camera icon was deleted

So my father managed to delete the camera icon from his app drawer. I searched the app drawer to see if it got hidden in a folder.. I checked his app settings to see if the camera is enabled. His camera is enabled. Double tapping the lock button still brings up the camera. I tried to reset app defaults and permissions that didn’t do anything. I booted into safe mode it was not there. The camera app isn’t set as default. So I tried downloading another camera app to see if I could trick it into allowing me to make the camera default again. No such luck. I have no idea what else try short of factory reseting the phone which he doesn’t want to do