How long does filler usually last for the sunken areas of the cheeks?

I’ve been dieting too hard lately, so while my body has gotten slimmer, I’ve lost facial fat as well, making the sides of my cheeks look deeply sunken. I look so lifeless and older than my age, so I’m considering starting filler treatments to add volume to these sunken areas. On average, how long do fillers typically last to provide a natural, non-artificial plumping effect? ​​I’m also curious if there is a significant difference in duration between domestic and imported brands! Please share reviews from people who received fillers smoothly without any side effects like bruising or foreign body sensation!