Prostetic for Eduardi Campaign

I lost my leg in a motorbike accident at the age of 21 years old. I am a forener so it is difficult to get govement assitance. I also had a heart attack reaently. My present leg I obtain under medical aid. I dont have, medical aid anymore.  I lost a lot of weight. I am half my weight and my prostetic leg is too big for me. I am a motormachanic by proffesion and find it very difficult to work. I do peace jobs to sustain myself. Because at my age and my condition it is difficult to find work  I would really appreciate your assistance.