Is it possible to achieve a natural change if I get fillers?

Lately, I feel like my face looks a bit tired in photos because certain areas stand out as sunken. I am looking into fillers. Rather than a drastic change, I want to maintain my original look while naturally correcting only the areas that need improvement. I am curious if fillers are actually capable of making such subtle changes. Since the ideal shape and amount likely vary depending on the area, I would also like to know what factors are emphasized during the consultation. For those who have received fillers for the first time, I am curious whether the results were immediately noticeable to others, or if they were natural enough that no one would know unless I mentioned it. I would appreciate honest reviews from those who have experienced this firsthand!