Who is filler recommended for? Will it look natural even on people with severe cheek hollowing?

Lately, I often feel like I look tired whenever I take photos because my face seems to have lost volume. I am particularly worried because my cheeks look sunken, making me look older overall. I am considering getting a consultation for fillers, but I am hesitant about styles that look too obviously artificial. I am curious about who is typically recommended for fillers and whether it is possible to achieve a natural look for someone like me who is concerned about sunken cheeks. I am also concerned that getting fillers might make my face look swollen or change my overall impression, but I have heard that nowadays, many procedures are performed to look natural. I would love to hear reviews from those who have received fillers, including which areas they were most satisfied with and how long the results lasted.