Anyone who has seen results from lip corner fillers?

They say the corners of the mouth sag as you get older, and lately, I can actually see them drooping in the mirror. Others say they don't notice it yet, but who knows their own face as well as I do? Haha. I can see it when I look in the mirror, and when I look at photos taken by others—not selfies—I look a bit sullen because the corners of my mouth are drooping even when I'm expressionless. I think lifting procedures look more natural when done before the sagging is too severe, so I'm looking into fillers. I also found out that I could get rid of lip wrinkles while correcting the corners of my mouth!

It's a procedure many celebrities get, so if you look up before-and-after photos, there are plenty. However, when I look at celebrities who have received fillers, they all look a bit awkward. It feels like they are forcing their mouth corners into place, or sticking their lips out. Also, because the corners are lifted too excessively, it looks somewhat unnatural, if that makes sense? I just want to use fillers to naturally improve the drooping corners of my mouth and lip wrinkles. I find anything too excessive burdensome.

If I want the filler treatment to look as natural as possible, do I need to reduce the dosage? Or does the doctor's technique need to be good?

Also, I heard that getting Botox along with fillers makes the corners of the mouth lift more noticeably. Would it be a good idea to get them together? Please give me some advice.