What are the effects and duration of the results of Ondari Lifting? Does it help with sagging cheeks and a double chin?

Hello, I am writing to ask a question before my lifting consultation. Lately, my cheeks and jawline haven't looked the same as they used to, so I've been looking into various options and have seen a lot of talk about Onda Lifting. I'm hesitant about the swelling or scabbing that can occur with laser treatments, and since I'm looking for a procedure I can get on the weekend and return to work on Monday, I'm leaning toward Onda Lifting.

My biggest question is about the effectiveness of Ondari Lifting. I heard that the procedure involves heating the fat layer rather than the skin surface; does that mean I can expect it to help tighten the lower body lines, such as reducing sagging cheeks or a double chin? Or should I view it as simply providing elasticity?
I would also like to know how long the effect lasts. I understand it varies from person to person, but I am curious to know roughly how many months it lasts, and whether it completely returns to its original state after the maintenance period, or if some residue remains.

I would also like to ask how the treatment cycle is determined when receiving the Ondari Lift for the first time. Is it generally recommended to receive a few sessions at 2-week intervals, or is the schedule decided during the consultation after observing the progress with a gap of at least a month?

Lastly, regarding the price and treatment time. I would like to know if the cost varies per session and how long a single session takes. I have a bit of facial fat, so I would appreciate it if you could also check if I qualify for this treatment. Thank you in advance for your reply.