[AlexB182]

I think you good it quite right, you have been too passive IMO during this hand.
First, I think you should've raised PF. He opens with a raise from the button, this could be ATC, at least it must not be a premium hand. Maybe you could end that hand right there.
On the flop, I have to disagree with you saying it is horrible. In fact, you turned TPGK, gut shot straight and backdoor FD while villain could have anything here, even total crap. Therefore you should either donk this flop or go for a c/r, whatever you do definetely show some strength here.
Rest of the hand is pretty ok, though it would've of course developed completely different with more aggression PF and on flop.