Hello,
My situation is same too, thus my suggestions are:-
1. Don’t think of Debt for next 2-3 Months. Give your full salary to your sibling and tell him to manage during this duration.
2. Focus only, how to get rid of Gambling and Playing
3. I can guarantee, you there will be relapses during this period too; you will borrow or cheat to get money. (but this is a recovery phase)
So try by focusing on “Stop the Gambling”