I don’t hate the fold as played.
Kind of surprised to see 4/5 callers pre. Perhaps you need to up your open a bit (see Christian Soto on ‘pain threshold’).
As played, flop bet needs to be almost double (from 33% to 66% with being OOP and wet board), I think.
As played the turn donk lead looks very much like you are now beat. He’s donking into 4 players with a turn card that hits most of your opponents range. I’d only call of you are sure that a) you wont get 3-bet b) you can get paid off on a straight or c) there is a real chance he’s bluffing and will give up OTR.