How to improve sagging jawline

I think my jawline used to be visible.
These days, when I take pictures, the bottom part looks particularly dull.

Even if the angle changes just a little, my face looks bigger, so I'm worried about it for no reason.

wife Jinchulsal That's why I'm worried

I'm more worried because there are many causes, such as loss of elasticity.

Exercise and massage have their limitations, and in many cases, treatment is used to treat the condition.
sagging jawline I'm curious as to what kind of management or treatment is effective.

if sagging jawline Has anyone tried to improve it?