Do I have wide cheekbones or do my zygoma bones just look wide because my temple area seems narrow? (photos)

I think your cheekbones are relatively wide but I think it looks good. If you had a zygomatic reduction, as is common among Korean women, the sagging of your cheek tissue will get worse. The more skeletal support your cheeks have, the less sagging you will have. If the disproportion bothers you, I would consider fat grafting to the temples. You are developing a mid cheek groove extending from inner corner of your eyes downward over your cheeks. This is also an area where fat grafting might help. I do not think that a midface lift will help you and it may leave evidence of surgery that you do not like.

Your question is a good one for which the only way to answer that question is computer imaging looking at both types of changes. (temporal augmentation vs cheekbone reduction) I suspect that you have a more significant temporal hollowing issue than wide cheekbones....whose width is magnified by how hollow the temples/side of your head is. This can be treated by a variety of temporal implants to permanently increase their fullness.