Villain is 29/15 with low agg factor < 1
I play bad. Tips?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($97.75)
Hero ($48.80)
CO ($41.70)
Button ($61.20)
SB ($79)
BB ($49.30)

Preflop: Hero is MP with 7, 7.
UTG calls $0.50, Hero raises to $2, 4 folds, UTG calls $1.50.

Flop: ($4.75) 6, 3, 8 (2 players)
UTG checks, Hero bets $3.5, UTG calls $3.50.

Turn: ($11.75) 5 (2 players)
UTG checks, Hero bets $7.5, UTG calls $7.50.

River: ($26.75) 8 (2 players)
UTG bets $15, Hero folds.

Final Pot: $41.75