What is the best way to fill deep neck lines after post thyroidectomy lymph node removal? (Photos)

I'm a 19-year-old female and recently had to undergo an extensive surgery on my neck due to Thyroid Cancer. I've always had these deep necklines ever since I was young and after research through here- I believe it's hereditary. After surgery, I feel like my necklines have become deeper and I no longer can handle the way my neck looks. I am unsure on what I should do since I've been reading that working on the neck is extremely difficult. I would appreciate your honest opinion/advice on my case!