iphone 11 screen black edge

Two issues came up simultaneously! I was watching YouTube on my iPhone 11, fully updated and rebooted. The YouTube suddenly appeared foggy, not "resolution", but as if there was a translucent foggy overlay. I rebooted my iPhone 11 twice, now suddenly there's a black edge on my screen with a black rectangle at the top. I've just lost nearly a cm of screen width!! 4+ mm on each side!!!

similar post says turn off accessibility features, mine were already all off. My screen brightness is set automatically. I changed no setting for this to happen, simply rebooted the iphone for the YouTube weird issue. The black edge was immediately on my lock screen. After the first reboot. additional reboot did not fix this glitch! 😟

edit: as I post this question, a third issue suddenly appears! In the below "device selection" drop-down menu, my iPhone 11 phone has random garbled characters.

three problems in hour hour.

what's wrong with my iPhone???

i want the full screen back!