Unable to fix camera glitches on iPhone 16 Pro Max

What could be the problem here? Camera was working completely normal minutes before this has occurred, purple screen, lines etc. This happened yesterday, but today when opening the camera, the second thing has appeared, colorful dots in the edges of the Camera app (screenshots are attached). Is there a way to fix this? This is my mother’s iPhone 16 Pro Max, thankfully I didn’t ever have this issue on my iPhone 16 Pro. She is using the (new) device for a month or less and this is the first time this is happening. Also, she tried fixing the problem by restarting the phone, thinking it was hopefully just a glitch, but the problem is still occurring.

[Re-Titled by Moderator]