NL50, KQo OOP, feel like I lost some value

[LRG]

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

BB ($53.55)
UTG ($45.95)
MP ($48.85)
CO ($52.95)
Button ($50.70)
Hero (SB) ($50)

Preflop: Hero is SB with K, Q
UTG calls $0.50, 2 folds, Button calls $0.50, Hero calls $0.25, BB checks

Flop: ($2) 7, K, Q (4 players)
Hero checks, BB checks, UTG checks, Button bets $1.50, Hero calls $1.50, 2 folds

Turn: ($5) 2 (2 players)
Hero checks, Button bets $2.50, Hero raises to $7, Button calls $4.50

River: ($19) J (2 players)
Hero checks, Button checks

Total pot: $19 | Rake: $0.90

Leider keine Stats, HUD still not working.
Villain seems solid, table allgemein relativ nitty.

Bin vorallem über river nicht glücklich!
Was meint ihr über die Line? Flop raise?
(irgendwie schon im Nachhinein) Turn nochmal flatten und am river c/r spielen? Turn flatten + river vbeten? Bin ziemlich ratlos in der Hand.