Got a crater deformity from gyno surgery. I did three revision surgeries but my chest indentation won't heal. What should I do?

I did a gynecomastia surgery a year and a half ago. When I sit or bend my nipples dip inside my chest, or when I flex. I went to another doctor and he proposed fat injection and scar tissue release. I did that, it helped but the issue was still noticeable. He then did another surgery on me with local anesthesia and released the scar again. Helped a tad but the issue was still there so we did another scar release a month later. Why does my scar tissue keep sticking to my muscle and what to do?