The kind of deeply indented, atrophic C-section scar seen in the photo is not an uncommon problem. Subcision accompanied by the use of an injectable, robust, lifting filler can be used to elevate and smooth the scar. Once maximal elevation is achieved, professionally performed manual medical microneedling can be used to help further blend the inevitable residual color and textural irregularities with the surrounding normal skin. In your research, you will no doubt be bombarded with claims for this or that "bells and whistles" fraxel laser or RF devices, but bear in mind that to date these expensive, supposedly "next big thing" devices are supported far more by markeing and advertising hype and social media buzz than any hard science. So, "buyer beware" is good advice when evaluating these options. You would be wise to consult a board certified cosmetic dermatologist with expertise in scar treatments. Hope this helps.