when I 3bet I knew dude had called 4/7 3bets in the last 100 hands
but then saw some important info in my HUD AFTER hand was over:

Won at Showdown 1/4
River betting frequency 4/4

Anyway, should I have bet the Turn here?

PokerStars - $0.05 NL (6 max) - Holdem - 4 players
Hand converted by PokerTracker 4

CO: 102.4 BB (VPIP: 26.37, PFR: 20.88, 3Bet Preflop: 9.68, Hands: 91)
Hero (BTN): 114.4 BB
SB: 131.2 BB (VPIP: 39.02, PFR: 26.83, 3Bet Preflop: 13.33, Hands: 41)
BB: 258.8 BB (VPIP: 12.28, PFR: 12.28, 3Bet Preflop: 8.00, Hands: 57)

SB posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has Q Q

CO raises to 3 BB, Hero raises to 9 BB, fold, fold, CO calls 6 BB

Flop: (19.4 BB, 2 players) 9 T 8
CO checks, Hero bets 9.4 BB, CO calls 9.4 BB

Turn: (38.2 BB, 2 players) K
CO checks, Hero checks

River: (38.2 BB, 2 players) A
CO bets 20 BB, fold

CO wins 36.6 BB

looks fine

edit: would check flop a lot with our range, prob would x/b this hand aswell

Do you mean x/raise the flop?

noooo x/c, good board for his range, bad spot if we get raised when we cbet

edit: wtf am I saying, we are IP so we just check behind

Seems standard. Only thing I would change would be to bet larger OTF like 2/3 pot at least. The reason being is because this board hits our opponent's range fairly hard so we shouldn't expect very many folds. This means that we should be betting the flop less frequently, presumably with stronger hands so therefore you want to be betting larger.

A somewhat exploitable line I've been experimenting with in situations like this is a small bet OTT. Like 1/3 pot. He has some KJs/KQs and maybe some KQo depending on how bad he is. Other than that, though, the K doesn't really change a whole lot. If you face a c/r you can pretty comfortably fold and it prevents you from getting bluffed on the river because if villain c/c turn then leads river that makes absolutely no sense. After c/c turn all of his missed draws will probably just give up whereas if you check back turn like you did villain can bluff very profitably on rivers.