Need your help here busted at 10th. Did I play wrong?

PokerStars - 200/400 Ante 50 NL - Holdem - 5 players
Hand converted by PokerTracker 4

SB: 56.61 BB (VPIP: 54.55, PFR: 24.24, 3Bet Preflop: 7.14, Hands: 33)
BB: 28.7 BB (VPIP: 22.97, PFR: 23.61, 3Bet Preflop: 11.11, Hands: 77)
Hero (UTG): 33.94 BB
CO: 18.64 BB (VPIP: 13.16, PFR: 9.46, 3Bet Preflop: 4.35, Hands: 77)
BTN: 69.41 BB (VPIP: 25.86, PFR: 14.29, 3Bet Preflop: 5.88, Hands: 60)

5 players post ante of 0.13 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.13 BB) Hero has 6 6

This is just a cooler. If he can have 6 combos of QT he can also have other Qx that is never folding, particularly 8 combos of QJ.

Try to spread the betting more gradually over the streets.

Don't post results - it makes it more difficult to look at the hand properly.

The actions at every street were fine, you just ran into a cooler. It's only the bet sizings that I can really comment on.

PF when you're effective less than 50BB, opening 3x is a bit too big and not necessary - you have basically just as much fold equity with a 2.5x open than a 3x and it costs you less when you want to fold to a 3Bet.

When you flop a set, you're wanting to get it all in by the river so you need to plan your bet sizings accordingly. I would have bet something like half pot on flop and turn which would leave you a 2/3 pot river shove that is more disguised as something you might do with a bluff or a more marginal value bet.

Also if your opponent was on a draw, then you get more value on the flop and turn so when he inevitably folds on the river, you've got more value out of him.

Thank you!
I was sure he had a Q, but as you said could have been Qx.