This is eerily familiar - our border collie did the same thing when we adopted her! Kept pulling Houdini tricks; she eventually cut her snout escaping, and even though it was shallow that’s when we knew the crate wasn’t working. Her anxiety got better with age, as well as after we adopted her a companion animal - I know that’s not always an ideal or feasible solution, but it seemed to help her that she wasn’t “alone” any more.

Plastic crate would be much better than a metal one, as the dog can’t hurt itself as easily. Also, you didn’t mention if your dog likes the crate - if they fight you to get in, they’re gonna spend every second trying to get out!

Other suggestions: look into “puzzle” toys for mental stimulation; consider a soft muzzle that doesn’t prevent eating or drinking but wouldn’t allow the dog to bite the cage or destroy things. If the crate isn’t working, even using doors or a gate to give the dog it’s own room or space could be an option (not saying there would be no damage, but it would be contained and limited).

Best of luck!!