Please critique my play. Villain was 29/18/6 over 30 hands, not much intel. I thought I might be playing against a set so I just called down as I was Out of position.

Absolute/UB Cereus No-Limit Hold'em, $0.10 BB (9 handed) - Absolute/UB Cereus Converter Tool from FlopTurnRiver.com

Button ($6)
SB ($4.91)
Hero (BB) ($10.66)
UTG ($15.52)
UTG+1 ($13.45)
MP1 ($5.12)
MP2 ($0.67)
MP3 ($15.05)
CO ($4.80)

Preflop: Hero is BB with K, K
1 fold, UTG+1 calls $0.10, 5 folds, SB calls $0.05, Hero bets $0.30, UTG+1 calls $0.20, 1 fold

Flop: ($0.70) 8, 6, 8 (2 players)
Hero bets $0.40, UTG+1 raises to $0.80, Hero calls $0.40

Turn: ($2.30) Q (2 players)
Hero checks, UTG+1 bets $0.80, Hero calls $0.80

River: ($3.90) 5 (2 players)
Hero checks, UTG+1 checks

Total pot: $3.90 | Rake: $0.19