TPGK KJ 3B pot on Jx , riverspot oop

PokerStars - $0.25 NL FAST - Holdem - 9 players
Hand converted by PokerTracker 4

BTN: 100 BB (VPIP: 12.12, PFR: 8.44, 3Bet Preflop: 1.64, Hands: 492)
Hero (SB): 100 BB
BB: 184 BB (VPIP: 42.86, PFR: 28.57, 3Bet Preflop: 0.00, Hands: 7)
UTG: 123.76 BB (VPIP: 22.22, PFR: 22.22, 3Bet Preflop: 28.57, Hands: 18)
UTG+1: 45.8 BB (VPIP: 21.43, PFR: 18.25, 3Bet Preflop: 8.33, Hands: 130)
UTG+2: 98.8 BB (VPIP: 20.00, PFR: 20.00, 3Bet Preflop: 0.00, Hands: 10)
MP: 268.32 BB (VPIP: 14.41, PFR: 9.46, 3Bet Preflop: 4.65, Hands: 227)
MP+1: 52.24 BB (VPIP: 16.00, PFR: 12.00, 3Bet Preflop: 3.45, Hands: 76)
CO: 100 BB (VPIP: 13.60, PFR: 6.40, 3Bet Preflop: 4.26, Hands: 125)

Hero posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has J K

fold, fold, fold, MP raises to 3 BB, fold, fold, fold, Hero raises to 10.8 BB, fold, MP calls 7.8 BB

Flop: (22.6 BB, 2 players) 9 2 J
Hero bets 10.8 BB, MP calls 10.8 BB

Turn: (44.2 BB, 2 players) 9
Hero checks, MP bets 24 BB, Hero calls 24 BB

River: (92.2 BB, 2 players) 6
Hero checks, MP bets 52.84 BB, Hero?

Feels like i'm just bluffcatching and i'm doubting he'd turn lower pair type hands into bluffs I checked turn cuz ott i don't see him calling , feels like i'm bluffcatching ott already , was basically hoping to showdown my hand