NL2 - Flop a set and a bad runout

PokerStars - $0.05 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

MP: 31.6 BB
CO: 159.4 BB
BTN: 100 BB
SB: 121 BB
Hero (BB): 101.2 BB
UTG: 196.6 BB

SB posts SB 0.4 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has 2♠ 2♥

fold, fold, CO raises to 4 BB, fold, fold, Hero calls 3 BB

Flop: (8.4 BB, 2 players) 4♠ 2♦ 6♦
Hero checks, CO bets 4 BB, Hero raises to 15 BB, CO calls 11 BB

Turn: (38.4 BB, 2 players) 8♠
Hero bets 22 BB, CO calls 22 BB

River: (82.4 BB, 2 players) 7♣
Hero ???,

Villian is VP-71 / PR-13/ 3B-0 on 79 hands