I'm curious who Ondari Lifting is recommended for!

I am in my 30s and have recently become interested in skin lifting procedures, so I am looking into them.

I learned about Ondari Lifting because it is said to have minimal pain or downtime, so I am posting this question to hear reviews from people who have actually experienced it.
I heard that it has a skin tightening effect through collagen production, as well as an effect that breaks down fat!
I would like to know specifically who is recommended for Ondari Lifting.
Is this procedure perhaps more suitable for skin types with a double chin or heavy cheek fat?
Conversely, I am concerned that if one has very little facial fat or thin skin, side effects such as sunken cheeks might occur.
I also have many questions regarding the effectiveness of the procedure and the duration of the results.
I would like to know if the effects of the leg lifting appear immediately after the procedure, or if it takes a few weeks to feel the contour lines becoming slimmer.
I am also curious whether satisfactory results can usually be seen after just one session, or if the effects are properly maintained only after receiving them consistently at one-month intervals for at least three sessions.
Additionally, my biggest concern is the pain! Compared to conventional ultrasound lifting procedures like Ulthera or Shurink, I heard that Ondari Lifting is almost painless thanks to the cooling system, to the point where you don't even need to apply anesthetic ointment. Is that really true?