Hand 1 - you have position on him. A standard line for me here would be to call the flop bet and raise on the turn. He projects weakness by betting the same amount again, so rep the jack or an overpair and raise it to $10 or something like that. If you're not going to play it that way, I don't like chasing after six outs; your flop call is pretty bad for a six outer. Overcards are not a good draw. To stay in this hand you need to mix in some aggression and actively steal the pot from him. Otherwise just fold on the flop. He hit (or has a medium pocket pair) and you missed... let it go.

Hand 2 - tough hand, I usually play it like you did. There's a good case for folding to those turn min-raises unless you have a read that says the opponent might bluff that way. His line oozes strength. Good river fold, anyway.

Hand 3 - I don't like the way you played this hand. Re-raise pre-flop. If you're mixing it up with AK and you miss, you should usually default into a "call small bets, fold to big bets" mode. I don't mind stabbing at the pot on the river, but the overbet is silly - the pot's in the ballpark of $5 and you're betting $10 to try to take it down? Terrible risk/reward. Bet $3 there (it's by far the biggest bet that has been fired at that pot) and you might take it down often enough for it to be profitable.