$10 NLHE 6-max: AJs turn agression

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has J A

Hero raises to 3 BB, fold, fold, fold, fold, BB calls 2 BB

Flop: (6.5 BB, 2 players) A 5 9
BB checks, Hero bets 3.1 BB, BB calls 3.1 BB

Turn: (12.7 BB, 2 players) 4
BB checks, Hero bets 9 BB, BB raises to 31.5 BB, Hero calls 22.5 BB

River: (75.7 BB, 2 players) 8
BB bets 63.4 BB and is all-in, fold

fold turn. two pairs, sets beat you. I don't see any bluffs in villain range here. (sometimes maybe some Axs with fd but it's really rare). Folding the turn after river allin from villain doesn't make any sense if you decided to call turn. Something changed? no. So you should call river, but that's not a point. Fold turn is best play here.