I am really sorry to hear about your loss. I lost my mother to suicide whilst I was still gambling and I remember gambling on the day of her funeral. It was what I needed to do at the time I guess – and gambling is performing a similar need for you – to take the pain away for a short time. The trouble is that gambling doesn’t only rid us of our pain, it rids us of our bank balances too.
You need to find a better way of coping with your grief other than gambling. Befrienders .org has a bereaved by suicide page which has suggestions on moving forwards and links to organisations which may be able to help in several countries (I can’t tell where in the world you are.) As RG has said, counselling or grief groups would help – you may find other ideas about how to cope through people dealing with similar difficulties in their own lives. Can you talk to your medical professional, GP or similar? They may know of resources in your local area.
You say you had your families full support when you stopped gambling before. Is it possible to get support from them now? If you could get someone else to handle your finances whilst you are working on healing, that would at least put the brakes on the money losses. There is lots of information on this site about the practicalities of stopping gambling – but it is emotional support you need now – from real humans, NOT from a slot machine. Get in contact with people, in person if you can – or by email etc. There are online groups here if you want to chat. I deeply hope you can find the support to come through this.