I was thinking that preflop he would 3bet me with 1010, JJ etc. Maybe he could have A9 or A8 but probably 66, 55... ? Defenetly it was too deep to risk all my stack but...

PokerStars - $7.34+$0.66|15/30 NL - Holdem - 9 players
Hand converted by PokerTracker 4

SB: 49.33 BB (VPIP: 16.89, PFR: 15.46, 3Bet Preflop: 2.44, Hands: 228)
BB: 51.17 BB (VPIP: 16.03, PFR: 17.21, 3Bet Preflop: 7.78, Hands: 241)
Hero (UTG): 45.33 BB
UTG+1: 51 BB (VPIP: 19.69, PFR: 17.80, 3Bet Preflop: 9.09, Hands: 128)
MP: 48.5 BB (VPIP: 15.79, PFR: 11.11, 3Bet Preflop: 6.67, Hands: 38)
MP+1: 49 BB (VPIP: 20.00, PFR: 20.00, 3Bet Preflop: 0.00, Hands: 5)
MP+2: 47.5 BB (VPIP: 13.52, PFR: 12.34, 3Bet Preflop: 6.18, Hands: 679)
CO: 52.5 BB
BTN: 49 BB (VPIP: 23.53, PFR: 19.67, 3Bet Preflop: 20.00, Hands: 68)

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has 7 7

Hero raises to 2.27 BB, fold, MP calls 2.27 BB, fold, fold, fold, fold, SB calls 1.77 BB, fold

Flop: (7.8 BB, 3 players) 9 8 8
SB checks, Hero checks, MP bets 3.9 BB, fold, Hero calls 3.9 BB

Turn: (15.6 BB, 2 players) 8
Hero checks, MP bets 7.8 BB, Hero raises to 39.17 BB and is all-in, MP calls 31.37 BB

River: (93.93 BB, 2 players) 6

i don't see a reason to raise turn, nothing stronger folds and he is not calling with 66, 55 etc... call turn and fold river, i doubt he is vbeting 66- and i also don't think he will 3brl bluff in 3 way pot... folding turn also is not bad idea, but i guess he will have overcards some of the time...

Would probably just check/fold flop, don't think people are getting out of line this early on and plenty of bad turn cards for our hand. Definitely folding river.