Rase funds for a knee operation Campaign

I'm not sure how this works I found out out about you by a friend, I'm trying to raise the money for my knee operation, I have been to state hospitals 2 years waiting period before they can help and doctor said that way to long I have already started losing function in my leg and I'm a single mother with no medical aid and bearly keeping head above water as it is so I'm hear to ask for assistance, I have no support structure I have asked my work to assist me but unfortunately they came back stating they can not... Please can you assist me with rasing the funds