€20 NLHE 6-max: Just a cooler hand against unknown on wet flop?

iPoker - €0.20 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

CO: 95.05 BB (VPIP: 72.73, PFR: 0.00, 3Bet Preflop: 0.00, hands: 12)
BTN: 217.75 BB (VPIP: 73.97, PFR: 5.48, 3Bet Preflop: 6.52, Hands: 77)
SB: 115.4 BB (VPIP: 100.00, PFR: 75.00, 3Bet Preflop: 0.00, Hands: 4)
Hero (BB): 100 BB
UTG: 305.2 BB (VPIP: 28.81, PFR: 21.78, 3Bet Preflop: 7.35, Hands: 1,345)
MP: 48.85 BB (VPIP: 13.64, PFR: 9.09, 3Bet Preflop: 0.00, Hands: 24)

6 players post ante of 0.2 BB, SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 2.7 BB) Hero has 9:heart: 2:club:

fold, fold, CO calls 1 BB, BTN calls 1 BB, SB calls 0.5 BB, Hero checks

Flop: (5.2 BB, 4 players) 2:diamond: 9:diamond: 5:spade:
SB checks, Hero bets 5.7 BB, fold, fold, SB raises to 16 BB, Hero raises to 98.8 BB and is all-in, SB calls 82.8 BB

Turn: (202.8 BB, 2 players) Q:diamond:

River: (202.8 BB, 2 players) J:heart:

SB shows 9:club: 5:diamond: (Two Pair, Nines and Fives)
(Pre 57%, Flop 89%, Turn 92%)
Hero mucks 9:heart: 2:club: (Two Pair, Nines and Twos)
(Pre 43%, Flop 11%, Turn 8%)
SB wins 192.7 BB

Am I correct in deducing that this is just a cooler hand against unknown or you think I over played my hand?

Is just a cooler,SB can have any 2 cards here in a limp preflop pot

You got really unlucky this hand. Do not fret much about losing in this hand. Most players would find it tough not to lose all their money in this spot. So you are with the majority.

of course it is cooler. you well played this hand!