In what cases is under-eye fat repositioning suitable?

I am considering under-eye fat repositioning, and I am wondering when this procedure is suitable. I have a lot of fat, so my friends say that repositioning is effective. However, I am very worried because there is a lack of information. I would like to know in what situations this procedure is recommended and what other alternatives are available. It would be really helpful to hear the experiences and advice of those who have undergone the procedure in the past.