What will help me get rid of the dent in my butt that I’ve had for years? (Photos)

Hello, I am a 22 year old female weighing at 205 at 5’7. For as long as I can remember, I’ve had this “dent” in my butt for forever. After doing some research, I believe what I am experiencing is fat necrosis from what I think was caused by a fall on ice from 10+ years ago. It makes me super insecure and I genuinely think about everyday. I don’t wear certain clothes because you can see it and as vain as it sounds it has made me really depressed. I was reading around and heard that Renuva or Sculptra are my best options since I can’t afford or want to do a BBL. The area feels tight and I genuinely don’t know what is my best option. Please if anyone can help me fix this problem I would be so grateful!!