I'm curious about the effectiveness of Rivicol and how much pain it causes!

hello.
Lately, my skin elasticity has noticeably decreased and my face looks lifeless overall, so I am looking into skin boosters or collagen injections. I am asking this question.
Originally, I was looking into popular procedures like Rejuran or Ultracol first.
As I get older, I feel like the areas around my eyes and cheeks are slightly sunken, and I'm worried because fine wrinkles are increasing.
I am not sure if Revicol is the right procedure for my concerns, so I am posting this question to hear about the real effects from those who have already received it.
I have many questions, but what I am most curious about is the effect of Livicol.
I am curious if I can feel the volume immediately after the procedure. I am also curious about how long the effect lasts.
I am also curious about how much pain there is during the procedure and whether it is bearable if anesthetic cream is applied.
Also, I would like to know how many days the downtime is after the procedure. Is it possible to resume daily activities immediately?