Lip filler concerns

The philtrum isn't that long, but it's not that short either. It
 should be a few centimeters long, and when I figured out the length that looks pretty, I looked at it with a ruler and it was right in the middle, so it's
 not too thin or too thick, just a normal ambiguous lip.

These days, as I'm getting older, my philtrum looks longer,
 and I 'm so envious of people with thicker
 lips in that area, and I'm
 so pretty . (The picture I posted is of Pomo asmr's lips, but I'll delete it if there's a problem. I want the top part to be as thick as this person's lips. .)
 I'm looking into lip fillers, but I'm hesitant because I've heard some say that over time they will sag and make the philtrum look longer. I
 wonder if there are any people who have tried it... I wonder if it's possible to get lips like that with filler.