Villan: 121 BB (VPIP: 33.33, PFR: 20.00, 3Bet Preflop: 16.67, Hands: 16)
BB: 185 BB (VPIP: 21.88, PFR: 17.86, 3Bet Preflop: 6.98, Hands: 225)
UTG: 102.6 BB (VPIP: 20.54, PFR: 11.35, 3Bet Preflop: 3.28, Hands: 193)
CO: 104.6 BB (VPIP: 21.85, PFR: 14.57, 3Bet Preflop: 8.62, Hands: 154)
Hero (BTN): 126.8 BB

SB posts SB 0.4 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has Kc Jc
fold, fold, Hero raises to 3 BB, SB calls 2.6 BB, fold

Flop : (7 BB, 2 players) Kd 6s 3s
SB checks, Hero bets 4.6 BB, SB calls 4.6 BB

Turn : (16.2 BB, 2 players) Jd
SB checks, Hero bets 12.8 BB, SB calls 12.8 BB

River : (41.8 BB, 2 players) 8c
SB checks, Hero bets 26.6 BB, SB raises to 100.6 BB and is all-in, fold

SB wins 91 BB

So this is a hand I played not so long ago and it is giving me some thinking. Villan is unknown player quite aggressive stats: VPIP: 33.33, PFR: 20.00, 3Bet Preflop: 16.67, Hands: 16. Action goes as above. He shoved on river and I ended up folding. Since preflop anction I put him on a range of hands 22-TT,QJs-QTs,JTs,ATs,AJs,KTs,Ax,98s,T9s I expect him to 3bet better hands. I had a strong feeling I am against a set but he could be doing that with missed diamond or even spade draw idk. Was my fold too nitty, how was my bet sizing? Should I play that hand differently? Thank you in advance. Cheers!