keyboard stopped typing after I pressed something by accident

on windows 11 that setting moved, it's Settings > Accessibility > Keyboard now. same page has Sticky Keys (pressing Shift five times turns it on), worth checking while you're there. some laptops also have a keyboard lock key or Fn combo that disables the keyboard, check the F-row icons for a padlock or keyboard symbol.

Sounds like Filter Keys. Holding the right Shift for 8 seconds switches it on, easy to do while wiping. It makes Windows ignore short key presses. Settings > Ease of Access > Keyboard, turn Filter Keys off. If letters are typing numbers instead, that's Num Lock on a laptop with a hidden numpad, press Num Lock (or Fn + it) once.