I'd fold flop without reads at 5nl, that raise is massive. Like 1% of players would even think about taking this line with anything other than 8x. As played river fold is good. Not much reason to bet the turn after being x/r otf.
Yeah think you are right on the flop, It just looks so much like he has nothing after the limp and that he is just raising with air, ego defo got the better of me. I need to keep reminding myself to not worry about being exploitable at this stake.