Villian has made a couple of loose calls, nothing abysmal. Did I get ahead of myself here? Anyone check/call the turn and hope for a cheap showdown? Anyone check/fold?

Party Poker No-Limit Hold'em, $ BB (10 handed) from (Format: FlopTurnRiver)

saw flop|saw showdown

Hero ($64.70)
UTG+2 ($96)
MP1 ($51.90)
MP2 ($15)
MP3 ($17.40)
CO ($61.02)
Button ($34)
SB ($135.07)
BB ($54)
UTG ($78.45)

Preflop: Hero is UTG+1 with 9, 9. MP2 posts a blind of $0.50. SB posts a blind of $0.25.
1 fold, Hero calls $0.50, 2 folds, MP2 (poster) checks, MP3 calls $0.50, CO raises to $2.28, Button calls $2.28, 2 folds, Hero calls $1.78, MP2 calls $1.78, MP3 calls $1.78.

Flop: ($12.15) 4, 5, 3 (5 players)
Hero bets $10, MP2 folds, MP3 folds, CO folds, Button calls $10.

Turn: ($32.15) 8 (2 players)
Hero bets $22, Button calls $21.72 (All-In).

River: ($75.87) T (2 players, 1 all-in)

Final Pot: $75.87

hero loses to a set?

button cold called a preflop raise, cold called a flop bet on board that should be safe.

then a true scare card hits and 8. why a scare card? cause now you lose to 44, 55, 33, 88
you beat 77, 66, 22.

what else could he have?

Check-fold this xxxxx coordinated flop in a multiway raised pot. Your overpair is too marginal here.

Results:

1. I played this hand badly.

2. Villian showed for the flopped ass-end.

3. I'm quickly learning from first hand experience that $50 NL players are no better than $25 NL players with respect to even their preflop game let alone their postflop game (not really applicable to Villian with this hand). Still does not take away from the fact that I misplayed my holding here. Lesson learned, thanks for the input.