no tough spots...

Hand 1 - KJs
KJs open is fine, so is folding. Flop your bet size is appalling, you're inducing a raise, why? so you can 3-bet? you're also giving the Ac odds to call. Bet $1.20+.
As played, he's 3-bet you so expect another flush/a straight/a set/an overpair here a lot. I guess calling the raise is ok, but bet the turn properly please, you're still giving Ac close to pot odds to call.
Ok -
pre-flop fine.
Flop $1.20, or 3-bet as played.
Turn as played $4.40

Hand 2 - 55
iso 55 here is marginal. Limping behind is probably better, but meh. Flop, yeah, you're up against a range of straights/combo draws/sets/overpairs. Getting it in is fine. Even your flop raise size isn't too bad.

Hand 3 - AA
pre-flop good. Flop good. Turn good. River not good.