Wow, what a story my man!
Truly that made me feel pumped for your progress!
I'm very sorry about your family, and I wish you your family the very best for the future. I'm a single 21 year old so I can't even fathom how that must feel for you but honestly I hope it works for the best.
Some things I can actually speak about though, is what you can do otherwise. If you've read Cam's 'Respawn', you may know about it, but regardless, i'll put in my own two cents. You need to occupy the time spent gaming with other things, other hobbies. Cam has a hobby tool where you can get some ideas, or maybe you have goals you want to meet already and have things in mind. For me personally, I cannot stress the point of investing in yourself enough. I would HIGHLY recommend you read brother, and I have a few recommendations if you want to know where to get started.
Essentialism: Greg Mckeown - i'm reading this book for the fourth time right now. Every time my eyes open to something new. To put it simply, this book is about being an essentialist. The way of the essentialist involves doing less, but better, so you can make the highest possible contribution. The power of this is profound, very highly recommend.
The power of habit: Charles Duhigg - This is a highly recommended book by Cam, too. It goes into the science of habits and how you can use it to change your own. It's very powerful. The tips in here are helping me move past bad habits such as gaming (and helping me formulate new, good habits), it's life changing.
Atomic Habits: James Clear - This book is kind of similar to The power of Habit, but I feel like it's more practical in application and less scientific based. Still a VERY good read, and probably a good follow up book to the power of habit, but you'd be perfectly fine reading either this or the power of habit alone.
7 Habits of highly productive people: Stephen Covey - i'll admit, I haven't read this yet, but it's on my bookshelf. Many have said this is an amazing book and its been a best seller for ages, so I guess it's worth a read, too.
Aside from books, the youtube channel "College info geek" and it's associated podcast (with the same name) has also helped me be more productive, too. (I should note he no longer focuses on college, as he's been around for a while and since graduated, he focuses on a lot of things...he introduced me to this website, actually!)
Again, I really hope things get better for you, my dude. I understand quitting gaming can be a lonely journey, but is it possible you could stay in contact with gaming friends through other platforms such as facebook or skype? Regardless, i'd be more than happy to keep in touch with you, should you wish.