Hello AK and welcome.
I hope you have been reading the other stories here; you will have sen a lot of stories similar to your own. You will also have seen the success stories – what are they doing that you can apply to your own situation?
There is a lot of support available to you both here and elsewhere. Talk to Student Services at your University, they are bound to have a pastoral care support team and could help with counselling/mentoring.
Talk to someone, get barriers in place so you can’t gamble online/access funds to gamble.
The money is gone, you can’t win it back. What you can do is make sure you don’t lose any more and dig the hole deeper.
Keep posting and let us know what positive steps you are taking.