[Closed] Was just bad luck?

Hand converted with online PokerStrategy.com hand converter:

Play hand

$1/$2 No-Limit Hold'em (8 handed)

Known players:
[tg]MP2$299.90:///////;MP3(Hero)$109.70:///////;CO$411.45:///////;BU$197.00:///////;SB$91.20:///////;BB$183.80:///////;UTG2$203.00:///////;MP1$137.95:///////;[/tg]

Preflop: Hero is MP3 with 7:c, 5:c.
3 folds, Hero raises to $6.00, CO calls $6.00, BU calls $6.00, SB folds, BB calls $4.00.

Flop: ($25) 6:h, 4:s, 8:s (4 players)
BB checks, Hero bets $12.00, CO calls $12.00, BU folds, BB folds.

Turn: ($49) 4:d (2 players)
Hero bets $16.00, CO raises to $32.00, Hero raises to $75.70(All-In), CO calls $59.70.

River: ($232.4) 2:h (2 players)

Final Pot: $232.4.
Results follow:

CO shows a full-house, eights full of fours(8:h 8:d).
Hero shows a straight, eight high(7:c 5:c).

CO wins with a full-house, eights full of fours(8:h 8:d).