I would like to inquire about neck wrinkle filler treatment.

I have been stressed for a long time because of the really deep wrinkles on my neck. I am writing to inquire after seeing reviews about how effective filler treatments were for neck wrinkles. I often find myself in positions where my neck folds. Even at work, I almost always have my head bowed while looking at my laptop, and at home, I frequently look at my phone while lying down with only my neck raised. I assume it would be difficult to improve these old neck wrinkles caused by such poor posture without a procedure. I've noticed that neck filler treatments seem to be quite popular these days; I wonder how effective they can be on wrinkles that are as distinct as the ones in the photo. I am also curious about how long the effects will last. Since the neck is an area where the skin constantly folds and unfolds, I am concerned about whether the filler will last well. Also, is the filler injected manually, stitch by stitch, along the wrinkles? I would appreciate it if you could also tell me about the procedure and the cost.