Do the effects of leg lifting really show noticeable results?

I am looking into lifting procedures because I feel my double chin is sagging. I’ve heard that On-Da Lifting is the current trend, as it uses microwaves to firmly tighten the lines with minimal pain, in addition to traditional ultrasound lasers like Ulthera or Shurink. It is very appealing that there is almost no bruising or swelling after the procedure, so it does not interfere with daily life. I am leaving this question because I am curious about the actual effectiveness of On-Da Lifting.

I have heard that this procedure not only regenerates collagen in the dermis but also removes unnecessary fat cells. Can the Ondari Lifting show noticeable results on a skin type like mine, where I have some facial fat and am concerned about sagging? Since the risk of side effects or pain is low, I am also worried that the effects might not last long or that my satisfaction might be low.

I would appreciate it if you could share the content.