Fat grafting or implant to augment lips?

Hi, I had a lip reduction surgery a year ago, and I regret it every time I look in the mirror. The doctor who did it recommended fillers to get back the original shape as much as possible. But I would like a more permanent result versus repeating fillers every few months.. I am very sad about this. There are very small lumps in one area of the incision line, and I don’t know if fillers or fat graft can work when there are scars in the lips? Someone also mentioned a fascia graft /implant.