Would dermal fillers effectively address my saggy face? (Photo)

1. For addressing sagging - You will need a skin tightening and lifting treatment such as radiofrequency, HIFU or devices utilizing combination technologies.
2. Perhaps yes. It could potentially make the facial features appear heavier. I don't see an indication for fillers except in your Marionette lines.
3. Using energy-based devices will tone down your lower facial area and this will automatically make your cheek bones appear prominent. Both lip and chin fillers will make your side profile 10x attractive
4. I would suggest a combination of Tripollar RF + PRP + Under eye boosters
Wishing you the best,Dr. Daphney Gracia Antony

When considering treatments you want to evaluate all profiles, not just the side in order to create the best overall facial harmony. Based on your description and the profile picture it appears you would benefit from chin filler and perhaps some lip filler. Botox to the masseter muscles may help slim the jawline. For skin tightening Morpheus8 can be used. This treatment combines microneedling with RF technology to improve overall skin tone and texture. We also recommend using medical grade skin care products like Transform MD and wearing sunscreen every day.