Age 28, facial volume loss from car accident 8 years ago. What are my options? (photos)

I’m a 28-year-old seeking advice for facial issues caused by a 2017 car accident, where I was thrown through the windshield. On my left side, I have volume loss in the cheek, temple, and under-eye, scarring under and on the eyelid, drooping of the eyebrow due to scarring and bone loss, and scarring at the eye crease making the eye appear smaller. I’m curious about treatments like fat grafting, fillers, or scar revision. Any advice is appreciated!