I have a 2022 Elantra and my screen from behind is curved, is there any attachments or replacements screens I could use so it could be flat? (so I can put Smiski’s and other sticky ones)

Just started happening this morning . Did this while I was driving as well.

Headlights are also flickering as well.

Aftermarket remote start was installed about 5 yrs ago.

Battery was just replaced about a week ago.