Hand converted by Holdem Manager 3

BB: $2.12 (106 bb)
CO: $2.31 (115.5 bb)
BTN: $5.33 (266.5 bb)
Hero (SB): $2.99 (149.5 bb)

Hero posts SB $0.01, BB posts $0.02

Pre Flop: (pot: $0.03) Hero has K A
fold, BTN raises to $0.05, Hero raises to $0.16, fold, BTN calls $0.11

Flop: ($0.34, 2 players) 8 A J
Hero bets $0.12, BTN calls $0.12

Turn: ($0.58, 2 players) T
Hero checks, BTN checks

River: ($0.58, 2 players) 2
Hero bets $0.17, BTN raises to $0.38, Hero calls $0.21

Results: $1.34 pot ($0.05 rake)
Final Board: 8 A J T 2


Villain is pretty much unknown, but seems regular TAG after 20h.
So my questions here:
a) Do you ever barrel the turn? I feel good about my hand, but not good enough to play a huge pot. Solver also shows me that a check is preferred play here most of the time.
b) When he checks back, I see a thin value bet on the river against weaker aces and maybe even KJ, QJ. Makes sense?
c) When the raise comes, I feel like I'm behind here pretty much everytime. Can't see villain turning anything into a bluff here -> In hindsight, I would have folded. From a GTO perspective, I feel like AK should be a call and weaker aces a b/f, because a lot of stronger hands from me would bet the turn more often, hence I am close to the top of my range.

River raises are pretty much always super strong @ NL10, I would quickly release a 1 pair hand. Not to say the more theoretical discussion about the GTO play is uninteresting, but from a practical point of view I would be richer if I had folded all those spots in my microstakes "career".

I would also always bet turn (mostly bet/fold), I kind of see why a solver would check but again @ microstakes I think bet/bet/bet TPTK until they raise or the board becomes awful is the easy and efficient strategy.

GTO means little when micro stakes fish are too passive and call down way too wide. I agree with boulgakov here. Go for value and fold to aggression from unknown.

I'm going bigger pre - villains flat wide + you're OOP..

Flop - Anything from 33% - 50% seems fine unless vs recs then we can increase to get max value.

Turn - I barrel here vs unknowns - 50% or there abouts


River - As played when villains raise the river it's usually weighted towards nutted combo's and is mostly underbluffed. If villain did bluff you then goodluck to him. I like your sizing here if your intention was to get crying calls from middling strength hands / worse Ax

Game Theory is for villains that play better than you.

Turn
It he he is raising with 15%ish I'm starting to like the turn check more and more. It turns a couple of his hands to winners which weren't already.

River
Since you checked turn, I'm going have to say that you should be consistent OOP and check river and hopes he bluffs with something.
It also avoids expensive difficult decisions like these against unknowns.
After the bet, generally when a not-certified maniac does something other than call, one pair is toast but good odds etc.