駄目で元々
Meanings
1
nothing to lose; might as well try
Used when attempting something with low expectations, because failure leaves you no worse off than before. Often said before a risky or uncertain action.
See also: ダメもと
I don't know if I'll win, but I'll apply. I've got nothing to lose.
They might say no, but I'll just ask. There's no harm in trying.