Distinct lines under my chin 9 months after neck lift - advice? (photos)

I had a lower face & neck lift in May 2021. I was 43. At first I was thrilled with my results, but as the swelling subsided I noticed very distinct lines under my chin. I kept silent waiting for it to improve with time, but now that I’m 9 months out, I figure this is my final result. It’s embarrassing. My surgeon has since left the practice. I asked another dr in the practice about it and she recommended Ultherapy! That doesn’t seem right to me. Was my surgery done correctly?