PokerStars - 3,5$ buy-in HU NL
SB: 50 BB
Hero (BB): 50 BB
SB posts 0,5 BB,
Hero posts 1 BB
Pre Flop: (pot: 1,5 BB)
Hero has K
7
SB calls to 1 BB,
Hero checks
Flop: (2 BB, 2 players) 3
K
A
Hero checks, SB BETS 1 BB,
Hero raises to 4 BB,
SB calls 3 BB
Turn: (10 BB, 2 players) 7
Hero bets 6 BB,
SB calls 6 BB
River: (22 BB, 2 players) 5
Hero bets 13 BB,
SB raises to 39 BB and is
ALL IN
???
Opponent has been tight preflop and calling too much on streets so far. Not many hands played against. Am I beat most of the times? Is ABC poker folding right there? Or is it clear call because of pot odds?
Could I have been doing anything better on other streets?
Sorry for disorganised post, I am new here but ready to learn.