First, let me say that I am hardly surprised that you were disappointed with your laser treatments, as I have been cautioning readers for years that these supposedly relatively expensive, "next big thing" bells and whistles are far more backed by device manufacturer supported marketing hype than hard science. Although microneedling, properly performed by a professional, can be helpful for acne scars, it has been my over twenty years of experience with it that it is best reserved, as a final step, for treating residual color and textural problems after other more effective treatments have been employed. Subcision, which I have been performing for over twenty-five years, works well for elevating and smoothing acne scars. Although I typically supplement subcision with the use of a filler (primarlly for its ability to help promote new, native collagen and elastic fiber synthesis, rather than its much more temporary function to plump and elevate), I would suggest great caution in its use in this glabella and mid-forehead region, since this highly vascular region poses an increased risk for blood vessel occlusion. If a filler is used, I would suggest a very superficial injection technique and Belotero Balance would be a reasonable choice for this. Absolutely make sure that you are consulting with an experienced aesthetic physician and acne scar specialist. Best of luck.