Hi there,
From your photo, you do have rolling scars and some box scars. I would recommend a combination of subscision (+/- collagen stimulators), fractional CO2 lasers and fillers. Multiple sessions will be required for your case with an interval of at least 4 weeks.
Results do depend on a sufficient number of treatment sessions and in addition, these treatments are largely operator-dependent as there can be literally hundreds of settings for each laser, the manner in which the laser beams are administered to the scar, coverage, etc.
Do also note that results from fillers are not permanent and on average last 9 to 12 months. Hope that helps.
All the best!