I'm hesitant about getting fillers because of the volume.

Lately, when I look in the mirror, the area around my nasolabial folds seems deeper than before, and my cheeks appear slightly sunken, so I am looking into fillers. Rather than just filling one area, I want to consider the overall balance of my face, so I am considering getting a full-face consultation covering the nasolabial folds, cheeks, sides, and forehead. In particular, regarding the forehead, I find it burdensome to have it become too convex; I prefer a level of natural refinement. I have read online that consultations vary depending on face shape and current volume, even for the same area, so I am curious to know what kind of explanations those who have actually received consultations were given. I would also like to know if it is okay to consult about multiple areas at once. I am curious which area is examined first—the nasolabial folds, cheeks, or sides—and whether there is a difference between a full-face treatment and one done at a time. Since this is my first time, I am aiming for an overall natural look rather than drastic changes. I would appreciate it if those who have consulted with similar concerns could share their experiences.