Every country have criminals and guns. The difference is how available they are to the general public. And what type of guns.

Anyone in the US that isn’t a convicted felon can buy a handgun as soon as they turn 21. And there are very few laws on how you’re required to store them.

Compared to Europe where it’s incredibly rare for an average citizen to have access to a handgun.

I have no idea. And I’d rather not find out either. Nothing good will come from trying to find out.