I've raised £15000 to Living costs and a Automatic Car With disability aids

Hi, My name is Dan,
I have always prided myself on been able to support my family, I was discharged from the army on medical grounds after getting an injury while serving. I had 10 operations on my shoulder and none will ever get my full use back, this I could live with and have worked many jobs in the last 10 years. I learnt to live with my disability and my limitation.
This was until 2 years ago I was told due to my time serving I had worn my knee caps down so much that I need a new knee, a new knee at 33 years old, but I don't tick the NHS boxes to get a new one. I have to wait until I'm 65, 3 operations down and I am back where I started. I currently have a mobility car but due to cut backs ill lose this come Aug 19. This is my only form of transport as I cant handle public transport due to depression/anxiety and PTSD. I wear a morphine pain patch 24/7 that takes the edge off and I suffer some side effect from it. I always push myself to far and I always try and help, but now i'm the one asking for help.
I have been told I may never be able to work again due to the combination of my mind and bodies failures, yet the Gov seem fit to say I can't get any benefits as I'm fit enough to work.
My wife has put up with a lot she works 48hrs a week just to pay the bills and we have slowly gained a small amount of debt during this as I cant find a job I can handle, due to the state of me.
This has been one of the hardest things for me to do, ask for HELP. its not like me and I wish I didn't have to. soon ill be with out a car and Still trying to pay off old debt.
Any thing you can give from£1 would help.
I thank you
King Regards
Dan