Villain is unknown. I took quite a while to act on turn and river fwiw. Is this the best line?

$0.1/$0.25 No Limit Holdem
9 players
Converted at weaktight.com

Stacks:
UTG ($25.05)
UTG+1 ($25.00)
MP1 ($25.05)
MP2 ($25.00)
MP3 ($27.95)
Hero ($24.85)
BTN ($3.20)
SB ($24.65)
BB ($26.40)

Pre-flop: ($0.35, 9 players) Hero is CO
1 fold, UTG+1 calls $0.25, 3 folds, Hero raises to $1.25, 3 folds, UTG+1 calls $1

Flop: ($2.85, 2 players)
UTG+1 checks, Hero bets $2, UTG+1 calls $2

Turn: ($6.85, 2 players)
UTG+1 checks, Hero checks

River: ($6.85, 2 players)
UTG+1 checks, Hero bets $6