Player1 

Player2 

Player3 

Player4 

Player5 

Preflop Player1 raise 30 and everyone except player5 call flop is  then all in and player1 ops (turn and river doesn't change anything)

I guess if player 1 going for all in definitely 2 and 5 fold and if the others call player1 win 

Hundred percent player2 got lucky but we can do something about it

My English not so good sry but that