Some feedback on this hand would be nice, not sure what to put villain on.

PF 3b steal: 9 (3/22)
River fold to bet: 83 (5/6)
River x/r: 0/4

PokerStars - $0.10 NL FAST - Holdem - 9 players
Hand converted by PokerTracker 4

Hero (BTN): 104.2 BB
SB: 100 BB (VPIP: 17.59, PFR: 11.45, 3Bet Preflop: 2.97, Hands: 497)
BB: 100 BB
UTG: 104.1 BB (VPIP: 16.67, PFR: 8.33, 3Bet Preflop: 0.00, Hands: 13)
UTG+1: 131.9 BB (VPIP: 14.06, PFR: 9.92, 3Bet Preflop: 4.79, Hands: 393)
MP: 114.2 BB (VPIP: 18.29, PFR: 12.77, 3Bet Preflop: 4.15, Hands: 695)
MP+1: 100 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 1)
MP+2: 38.7 BB (VPIP: 11.11, PFR: 7.41, 3Bet Preflop: 0.00, Hands: 27)
CO: 100 BB (VPIP: 10.38, PFR: 6.59, 3Bet Preflop: 1.61, Hands: 184)

SB posts SB 0.5 BB, BB posts BB 1 BB

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

fold, fold, fold, fold, fold, fold, Hero raises to 3 BB, SB raises to 9 BB, fold, Hero calls 6 BB

[Not sure if this is a call vs someone who doesn't seem to 3b steal a lot?

Flop: (19 BB, 2 players) 4 8 A
SB checks, Hero checks

Figured there's not that much value here in betting, though it might have made the hand a lot easier.

Turn: (19 BB, 2 players) Q
SB bets 13 BB, Hero calls 13 BB

I think this is standard as played. Bet size was biggish, would fold river if he bets again.

River: (45 BB, 2 players) 6
SB checks, Hero bets 18 BB, SB raises to 78 BB and is all-in, fold

SB wins 77.4 BB

Thinking most people would def valuebet 2pair plus here, I'm assuming he's on air or a one pair hand. I beat all one pair hands except for AK so go for the small vb. Opinions? Too light? What does he play like this? Should we call here because our vbet looks weak? What IS our calling range?

u mean resteal?

i would cosider a fold pre..but just my opinion vs a 3%..
ott i´d fold at the light speed.
...anyway...
it looks like he has a read on u..and maybe he knows that u bet if he checkz and he want to take some other bb from u with a strong hand..maybe he knows that u fold if he x/r...who knows??btw is a good fold!!(imo)
i think your hand is enough good to try a showdown but not enough good to bet...
i´m not really sure about this..i´m trying to understand if i´m missing value with this kind of checks...but i usually check behind on this scenario*
..so...i´m also looking for advices...

u wrote this manually?

u mean resteal?

i would cosider a fold pre..but just my opinion vs a 3%..
ott i´d fold at the light speed.
...anyway...
it looks like he has a read on u..maybe he knows that u bet if he checkz and he want to take some other bb from u with a strong hand..maybe he knows that u fold if he x/r...who knows??btw is a good fold!!(imo)
i think your hand is enough good to try a showdown but not enough good to bet...
i´m not really sure about this..i´m trying to understand if i´m missing value with this kind of checks...but i usually check behind on this scenario*
..so...i´m also looking for advices...

u wrote this manually?

3b steal is the same as resteal right? Why fold turn, because of sizing? Because I kinda feel that if we fold there we already made the mistake preflop.

I did write those stats myself yes.

..ye..i think..but that´s the first time i hear that...

well..pre was a loose call imo..but anyway u see a flop in position and...yeö it can be ok..
i think u don´t hit the flop enough hard here..tpgk..all u beat here is a bluff..that´s why i fold the turn...
u think he is bluffing?

I think the hand is played fine. The river is wtf but I'll just shrug it off as some weird slowplay by a bad reg and fold.

Edit: pre is somewhat close but have to draw the line for defending somewhere. I guess AJ is about it.

This line is bizarre to me. I'm trying to imagine a hand I would play like this and I can't. I'm trying to imagine a hand anyone would play like this and the only thing I can come up with is QQ. Makes sense PF. Check the flop because of the ace. Hits the set on the turn so bets. And then on the river, maybe he thinks a check raise is the only way to get it all in, so he goes for it?

In general, are these nonsensical lines monsters? I think I'd be apt to think bluff, but maybe that's a leak for me.

Pretty much everytime I called a weird line by someone who wasn't an absolute whale (so no 75/0 or 55/45) it was a nutted hand. I'm not sure it makes sense for him to do it here though. After turn I can definitely see him having Ax (A5 or so might check flop for pot control, I think AQ+ would just bet but maybe not always), but also sets (I mean with AA here why bet the flop) and maybe KQ and some draws.

Once the river hits and he x/r I think that's highly weighted towards AA and QQ, maybe 57 but that doesn't seem to be his 3b range. Not sure why he doesn't just bet those because I think most people would easily call a bet here, but meh, as it stands he got the most value out of me probably.

fold preflop. Villain has 3% 3bet with enough hands on him to understand he plays tight, AJo plays horrid against that range postflop and will only cost you more money.