How can I improve my lower butt area? (Photos)

About 3 years ago I had thigh liposuction with fat transfer to the buttock area. I asked the surgeon to round out the bottom area of my butt because I already had a large butt. Due to weight loss the lower butt area begin to droop. After the transfer I now have an even bigger upper area and even drooper lower area. My butt is now disproportionate with several dimples. I'm very insecure about it and would like to fix it.

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