I think you're calling a lot of these hands bluffing, which they are. But I feel like most of these hands are more floating in position. Which I think is definitely good. I don't like the one's where you tried the plays OOP however. Position is key to all of these.

As for the last hand, and what ISF said, it IS a three bet pot

Smiffy44: raises to $6
determine: folds
Ste181118: raises to $12 <-- three bet

But once again, that hand isn't a bluff. You have a hand here, but you're just floating him in position, and repping the flush.