OK, my reasoning.

Hand 1: why are you making a hero call against unknown?
Hand 2: this one might be good with a bit of history. I realized you have a lot of outs on turn so turn raise is good, almost standard. I don't like a flop float without history.
Hand 3: calling pf with 83s is not good. And you said villain was a station, so why bluff him?

Those plays are not that bad, but you need more history to execute them or at least some more reads. Sorry, I was in a cocky mood when I wrote the first comment.