Acne scarring requires a combination of fillers, lasers, microneedling/PRP to get improvement. Please see an expert for a consultation. Best, Dr. Emer.
There are many treatment options for acne scarring. Unfortunately all of them have significant limitations.
Fat transfer is probably not a very good option.
Fat transfer is good for generating overall volume but does not do well with very precise wrinkle treatment.
Injectable fillers are much more precise and could be injected into the skin or close to the skin surface.
Other treatment options include laser treatments, dermabrasion and direct surgical excision of the scar.
For bad acne scarring in someone who has fair skin direct surgical excision is sometimes the best option.
I suggest consulting with several providers to get a more detailed treatment plan and perhaps try some fillers first.
I don't think you need generalized volume but rather very specific treatments into the areas of concern. You should not need a lot of filler.
Mats Hagstrom M.D.