Can deep horizontal wrinkles on the neck be improved with fillers, Ulthera, or Thermage?

Hello. I am writing this inquiry because I am deeply concerned about neck wrinkles, which bother me even more than my face.

At some point, whenever I looked in the mirror, I started noticing distinct horizontal lines etched on my neck. Perhaps due to frequently using my smartphone or sleeping with a high pillow, the wrinkles on my neck seem to be too deep and pronounced for my age. Although I diligently apply nourishing cream or neck cream to my neck during my skincare routine, I found that these deep wrinkles absolutely do not lighten with home care alone.

I am particularly self-conscious about the wrinkles on my neck whenever I wear low-cut clothes or take photos, and it upsets me because it makes me look older. My facial skin is still in pretty good condition, but I think the neck wrinkles make my overall impression look even older.

I have heard that the neck is tricky to treat because the skin is thin and moves frequently. In this case, should I get fillers specifically designed for neck wrinkles? Alternatively, I am wondering if collagen regeneration treatments such as skin boosters, neck-specific Ultherapy, Thermage, or Juvelook would be more effective. I would be very grateful if you could recommend the most effective treatment methods and precautions to naturally and smoothly improve my neck wrinkles!