None of my buttons on my xr are working, it also won't let me shut it down or turn it off, it won't allow me to open any apps.

If a button or switch isn't working on your iPhone or iPad, here are a few steps that might fix the issue. If they don't, you'll need to set up a repair. Remove any protective films or cases that might block the button or switch. Check for debris or dirt around the button or switch and clean with a soft cloth.

If a button or switch isn't working on your iPhone or iPad ...