Everyday my friend gambles with his money as same with his life and he always gambling throwing away his money for nothing but losing and the worth part of it is he owes me money
You should try to help your friend if he is just wasting his life away. Gambling is serious business, if he can't support the habit then he shouldn't play. It really is that simple.
The solution is very simple to say for someone who doesn't have gambling addiction like you. Do you think that his friend wanted to be addicted in gambling? Of course not, but he can't do anything about it anymore. He has debt now and his mindset probably is just that he's hoping that one day, he'll hit the jackpot and all these problems will finally be solved. He will continue asking for people for money because this is the only way for him to recover his lost money (on his mind, atleast).