My Ipad Air 4th generation backwards arrow key fell off what to do?
How do fix this problem with out getting a repair
Presumably you actually refer to an attached Apple Smart Keyboard folio, or Magic Keyboard for iPad. If the keys of either keyboard have been damaged, the keyboard may require replacement.
You would be best advised to visit the the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to assess your keyboard - and you can explore your available options: