How would you play this hand? do you think I did something wrong? opponent was unknown, no info on him

PokerStars Zoom No-Limit Hold'em, $0.05 BB (9 handed) - PokerStars Converter Tool from http://flopturnriver.com/

saw flop | saw showdown

Button ($8.05)
SB ($5.38)
BB ($7.78)
UTG ($5.04)
Hero (UTG+1) ($2.75)
MP1 ($5.83)
MP2 ($5.36)
MP3 ($4.57)
CO ($2.33)

Preflop: Hero is UTG+1 with 7, 7
UTG raises to $0.12, Hero calls $0.12, 7 folds

Flop: ($0.31) Q, K, 7 (2 players)
UTG bets $0.18, Hero calls $0.18

Turn: ($0.67) 5 (2 players)
UTG bets $0.42, Hero calls $0.42

River: ($1.51) 8 (2 players)
UTG checks, Hero bets $0.72, UTG raises to $2.74, Hero calls $1.31 (All-In)

Total pot: $5.57 | Rake: $0.23
Main pot: $5.57 between UTG and Hero, won by UTG

Results below:
Spoiler:

UTG had Q, Q (three of a kind, Queens).
Hero had 7, 7 (three of a kind, sevens).
Outcome: UTG won $5.34