Situation playing live 1/2 nlhe was that I was utg and dealt KK. I made a simple 3 bet to 6. 4 others ended up just calling after. Flop came: 2 of clubs, Queen of clubs, Ace of diamonds. I made a c-bet, about 3/4 of the pot, a couple after me folded but player in 7 seat re-raised. Player in 9 seat folded. Came back around to me in the 1 seat. I called. Turn: 4 of spades. I checked, he raised, I called, probably should have known I was beat by him having an Ace but I still went with it. River was a 7 of spades. I checked, he went all in, I had him covered so I called. He had 2 pair with him holding AQ off suit. If I raised more in the beginning, 4 or 5 bet rather than 3, would that have been better?