I'm in my mid-forties. Which one should I consult about, Maunzaro or Wigobi? I'm also worried about muscle loss and the yo-yo effect.

Hello. Now that I’m in my mid-forties, I’m worried because although my food intake is similar to before, I’ve definitely gained fat around my belly and sides. It doesn’t go away easily even with exercise, and it’s stressful that if I increase my dinner portion even slightly, my face swells the next day and the number on the scale goes up immediately.
I am considering consulting with Maunzaro or Wigobi at the hospital, and I am curious about the criteria used to differentiate between the two. I have heard a lot about gastrointestinal issues and muscle loss, and as someone with a sensitive stomach who has been doing strength training for a long time, that is my biggest concern. I would appreciate it if you could let me know in advance whether I should bring any medications I am currently taking, as well as records of my blood pressure and thyroid tests, for the consultation, and how I should adjust my exercise and diet during the first week after receiving the injections. Finally, if anyone has received both the weight loss injections and body treatments, I would like to know the order in which you proceeded.