Thermitight for mons pubis (not fat reduction, skin tightening only)? Or an RF?

I was ill for 3 weeks and couldn't eat. Went from 125 to 117 lbs but it wreaked havoc on my body. I have mild abdominal laxity and some on my Mons and Thigh creases. Because NO FAT needs removed only skin tightened would Thermitight be a good option? I worry because a few before/after photos of thermi has people with skin that looks MORE lax. Would an RF serve me better? What about subdermal j plasma for Mons? Or Ultherapy? CO2 peel? Thanks.