Severe lick granulomas, please help :(

Hi everyone, my dog Buddy (10yr old labrador) has horrible granulomas on his two front paws. I've tried the E-collar, wrapping his feet, putting antibiotic ointment on, etc. NOTHING has worked. I can't afford to take him to the vet, and I have no idea how I can help him. His paws are really bad. They are bleeding and he will not stop licking/chewing them. The few times his bandages stayed on, he tried to get at his back leg. I really don't know what to do and I'm so worried about him. Any help at all is greatly appreciated.