Is my derailleur hanger too bent?
There are several suppliers of universal derailleur hangers. The intended use is to mount a modern derailleur to vintage bikes. At one time the derailleur hanger was part of the derailleur and mounted under the axle nut. Cambria Bike.com Harris Cyclery both have several models that start at $1.00. You could also try to find one of the older derailleurs like a Shimano Tourney mega range that have the hanger built onto the derailleur they can be had for under $25.