I'm worried about my narrow lips. If I get lip fillers, will they turn into duck lips?

My lips are naturally very thin and on the shorter side, so I often hear that I look stern. Whenever I apply lipstick, I force an over-lip line, but it always smudges and looks unnatural, so it's really frustrating. I'm thinking of getting a procedure. My main concern is to add some volume to my lower lip and slightly lift the cupid's bow and drooping corners of my mouth to create the impression of a subtle smile even when I'm not doing anything. However, I'm really scared because I've seen cases on YouTube and in reviews where people failed to control the amount of product, resulting in the philtrum area sticking out unnaturally like duck lips. I'm wondering if it's possible to design a natural look that fits my facial proportions without being excessive. I assume I'll need to have a lot of consultations, right?