What should i be doing on the turn and river. Think my bet sizing on the turn is bad.

OnGame - $0.10 NL FAST (5 max) - Holdem - 5 players
Hand converted by PokerTracker 4

BTN: 97.1 BB (VPIP: 50.00, PFR: 50.00, 3Bet Preflop: 50.00, Hands: 7)
SB: 349.4 BB (VPIP: 42.11, PFR: 42.11, 3Bet Preflop: 14.29, Hands: 20)
BB: 29.5 BB (VPIP: 66.67, PFR: 50.00, 3Bet Preflop: 0.00, Hands: 6)
Hero (UTG): 241.6 BB
CO: 106.4 BB (VPIP: 23.44, PFR: 18.75, 3Bet Preflop: 3.70, Hands: 64)

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has Q K

Hero raises to 3 BB, fold, BTN calls 3 BB, fold, fold

Flop: (7.5 BB, 2 players) Q K A
Hero bets 5.5 BB, BTN calls 5.5 BB

Turn: (18.5 BB, 2 players) 6
Hero bets 7 BB, BTN calls 7 BB

River: (32.5 BB, 2 players) T
Hero checks, BTN bets 22.5 BB, fold

Hero shows Q K (Two Pair, Kings and Queens)
BTN wins 30.9 BB

*Ongame fast doesn't have auto rebuy so cant tell anything about villain by his stack size.

Bet turn bigger, x/f river is fine.

Proceeding on the assumption that this guy is a standard reg (which I think is reasonable), I think this hand really turns on AJ - this is the hand that is giving you your core value otf and ott. When the T comes, you are behind very often.

12bb bet on the turn okay?

Idk if he's standard reg, he's 3bet 50% of hands so far but the sample is too small to tell anything about that.

Missing a lot of value on the turn there.

12BB would be fine ott. I suppose player type considerations wouldn't change our actions on the flop or turn and we'd need solid reads to do anything other than x/f the river.