Don't ..... it's a bad deed .... Committing suicide is despicable, it is banned by all religions, organizations etc.
Everybody experiences, what you feel, "defeat in gambling or games",
If, you are not very proficient in the game, primedice.com, do not force yourself to play enough as far as you are currently experiencing.

I suggest, you try to work outside, anything to make money, to cover the loan you spent.

Warning: Don't rob, steal, kill or break any of the laws in your country.
What you feel someone else has felt, find solutions to solve the problem to cover your loan.