KK played too weak?

$0.50 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4


MP: $71.29 (VPIP: 56.94, PFR: 11.11, 3Bet Preflop: 0.00, Hands: 73)
CO: $61.79 (VPIP: 24.14, PFR: 3.45, 3Bet Preflop: 0.00, Hands: 29)
BTN: $60.34 (VPIP: 45.74, PFR: 17.83, 3Bet Preflop: 0.00, Hands: 130)
SB: $16.78 (VPIP: 50.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 4)
BB: $59.05 (VPIP: 27.10, PFR: 8.41, 3Bet Preflop: 0.00, Hands: 108)
Hero (UTG): $118.23


SB posts SB $0.25, BB posts BB $0.50


Pre Flop: (pot: $0.75) Hero has K K


Hero raises to $1.75, fold, CO raises to $6.00, fold, fold, fold, Hero calls $4.25


Flop: ($12.75, 2 players) 7 7 J
Hero checks, CO bets $7.00, Hero calls $7.00


Turn: ($26.75, 2 players) 8
Hero checks, CO bets $48.79 and is all-in, fold


CO wins $25.27

I noted a couple hands earlier that CO didn't raise 44 preflop which is kind of tight. With only 29 hands it's tough to call but he wasn't raising much. I could have 4bet pre flop but wanted to see the flop and play from there because if he has AA - he might push preflop anyway and then I lose my stack by calling. So, I'm ahead of QQ and AK I figure. But behind AA and JJ. So it's a coin flip if you look at it that way. But I'm thinking it's more likely AA. I feel like I could have probed for more info preflop or on the flop.

Is 4bet preflop a better strategy? If so, how often do you call the push? My 3+bet game needs some work as a bettor and a caller.

Given stacks and only 29 hands, I'm 4b this pre. As played, calling.

It's a tough one with only 29 hands. I fear I would be seeing Aces aswell with his PFR. So I think I would just call like you did PF. But I think his bet on the Turn is weird. Why so much? I would appreciate if some of the elite players here would tell me what hands it would be wise to make such a high bet with on the Turn, other than a bluff? Cause if he has the Aces, there no reason to scare the other player away, and little reason to believe he is being called. Or am I wrong?