This story is very sad. Your brother made a huge misstake, it's not ok to take your familys money. Maybe if it was his own money it would be ok.

You need to change enviroment somehow cause all of it is dragging you down. You need to help yourself first before you can help others.

It will do you good if you change enviroment. It's not Bitcoins fault. It is the fault of your brothers morale staling money from the family.