How do I fix post inflammatory hyperpigmentation and boil scars left behind from boils skin infection? (Under breast, groin)

Hello, I’m 32 y o,f5’obese. I had a rapid weight gain of a hundred pounds in a three year period due to medications and lifestyle factors. I developed autoimmune issues and the fast weight gain also led to more skin folds. I developed a longterm boils infection under my breasts and groin area. I’m on the AIP didt now and am steadily losing the weight and meds changes has helped also. That along with topical interventions have contained the infection and im left with these dark scars and pits.