Your stack goes in as an 80% favorite and the river beats you. You played it correctly, and you buy back in for another $200.
You open hands you'd normally fold. You call two river bets because you can't stand being pushed around. Your new stack is down to $60, with no bad luck involved at all.
You move all-in with a weak ace to get even, and it loses.
The bad beat cost $200, and everything after it cost another $200 that was entirely up to you.