Need help with lower door hinges

Repairing those holes doesn't have to be extremely difficult. See, One side of the hole isn't worn. If you can properly position a ceramic or similar round filler rod against those sweet spots, weld fill the void and even build the inside a little taller / thicker if you want.
I worked plant maintenance in a textile mill for 10 years. There was nothing we couldn't fix, one way or another.