Well, although I had a marginal hand, I was oop and as many players fold to a 3 bet when they don't have less than 10 BB, I decided to put him allin. Analysing the hand now, I think I didn't consider 2 points:
1st - His raise was not a steal as there were 6 to act after him;
2nd - I didn't a confortable stack, this play should appropriate if I had 50 BB.

PokerStars - $3+$0.30|150/300 Ante 25 NL - Holdem - 9 players
Hand converted by PokerTracker 4

UTG+2: 15.92 BB
MP: 95.35 BB
MP+1: 44.62 BB
CO: 43.06 BB
BTN: 10.77 BB
Hero (SB): 38.19 BB
BB: 25.41 BB
UTG: 33.96 BB
UTG+1: 16.1 BB

UTG+2 posts ante 0.08 BB, MP posts ante 0.08 BB, MP+1 posts ante 0.08 BB, CO posts ante 0.08 BB, BTN posts ante 0.08 BB, Hero posts ante 0.08 BB, BB posts ante 0.08 BB, UTG posts ante 0.08 BB, UTG+1 posts ante 0.08 BB, Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 675.00) Hero has T A

fold, fold, UTG+2 raises to 3 BB, fold, fold, fold, fold, Hero raises to 15.83 BB, fold, UTG+2 calls 12.83 BB and is all-in

Flop: (10025.00, 2 players) 2 9 5

Turn: (10025.00, 2 players) 8

River: (10025.00, 2 players) A

Hero shows T A (One Pair, Aces) (Pre 47%, Flop 5%, Turn 0%)
UTG+2 shows 5 5 (Three of a Kind, Fives) (Pre 53%, Flop 95%, Turn 100%)
UTG+2 wins 33.42 BB

V opening 3bb from UTG+2 w/55 is pretty bad but I don't think ur shove is all that great either. He's never folding and at best you're looking at a flip. Overall, you're beat way too often. Fold IMO

Yeah, I just fold in this spot.