It can be difficult to find free plastic surgery. Most insurance plans do not cover any types of cosmetic surgery or plastic surgery.
Some universities and training programs may offer discounted fees for this type of surgery. Sometimes, plastic surgeons will even offer their services as pro bono for individuals, but this is usually to the discretion of the surgeon performing the procedure.
There is a site I know of called myfreeimplants.com that allows people to have money donated for their procedure, but that would be up to the individual to decide if they would like to go that route. There are also numerous finance companies like Care Credit that can be of service to you.