On the flop I don't think it's unreasonable to raise as I protect against some overcards.
On the river I think I shouldn't have called as it seems like villain is value betting an over pair, the 8d doesn't seem like a useful blocker.
PokerStars - $0.02 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4
BTN: 103.5 BB
SB: 109 BB
Hero (BB): 154 BB
UTG: 221 BB (VPIP: 37.50, PFR: 25.00, 3Bet Preflop: 0.00, Hands: 16)
MP: 53.5 BB
CO: 242 BB (VPIP: 23.08, PFR: 15.38, 3Bet Preflop: 0.00, Hands: 14)
SB posts SB 0.5 BB,
Hero posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has 8
7
fold,
fold,
fold,
fold,
SB raises to 2 BB,
Hero calls 1 BB
Flop: (4 BB, 2 players) 4
6
7
SB bets 2 BB,
Hero calls 2 BB
Turn: (8 BB, 2 players) 2
SB bets 4 BB,
Hero calls 4 BB
River: (16 BB, 2 players) 2
SB bets 8 BB,
Hero calls 8 BB