This hand was very unlucky for me, however, I was wondering if bigger sizing could isolate this.
I didn't have enough data about this person (just 21 hands).
PokerStars - $0.02 NL (6 max) - Holdem - 6 players
SB: 188 BB
BB: 148 BB
UTG: 103 BB
MP: 139 BB
Hero (CO): 133.5 BB
BTN: 151 BB
SB posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has K♠ A♣
fold, fold, Hero raises to 3 BB, BTN calls 3 BB, fold, fold
Flop: (7.5 BB, 2 players) 4♠ 5♥ A♥
Hero bets 3.5 BB, BTN calls 3.5 BB
Turn: (14.5 BB, 2 players) 6♦
Hero bets 7 BB, BTN calls 7 BB
River: (28.5 BB, 2 players) 3♠
Hero bets 27.5 BB, BTN raises to 90 BB, Hero raises to 120 BB and is all-in, BTN calls 30 BB
Spoiler
Hero shows K♠ A♣ (One Pair, Aces)
(Pre 45%, Flop 83%, Turn 77%)
BTN shows 7♣ 7♥ (Straight, Seven High)
(Pre 55%, Flop 17%, Turn 23%)
BTN wins 259 BB