My leg amputation, prosthetic and medical bills

My left leg was amputated at the knee 3/26/2021 and I only have Humana Medicare for insurance. Prosthetics typically last between 3 and 5 years and average $43,000.00. I am already on permanent disability and behind on tens of thousands in medical bills. One of my surgeries cost me over $200,000.00 out of pocket after insurance, so I could walk again. Unfortunately, after years of fighting infections, MRSA and multiple complications an unplanned amputation had to be performed this week. I have had around 40 surgeries on my leg, 3 cardiac arrests, 1.5 years bed bound with daily nursery care, 5.6 years in a wheelchair, then walker and crutches before I learned how to walk again, almost 3 months total in the hospital since the original accident and I have lost everything to pay my bills; including my retirement account, my home, my vehicles, the ability to work and I live on an income well below the poverty line. I will have an immense amount of therapy ahead of me, both physical and emotional. To date I have had over $2.2 million in medical bills and insurance paid approximately $1.6 million and selling my home, cashing out my retirement and investments paid approximately $600,000 and I still owe and will have much more in expenses. Anything you can do will be greatly appreciated.