Facial asymmetry and nasolabial indentation from an old trauma - how can I improve facial symmetry? (Photos)

I have a long-standing indentation and facial asymmetry along my nasolabial area that developed about 10 years ago following facial trauma. Since then, I’ve noticed an uneven contour with a subtle cheek bulge above the fold, which becomes more noticeable when I smile. My goal is to restore normal facial symmetry and smooth the uneven contour rather than add cosmetic volume. Based on the attached photos, I would appreciate guidance on what treatment approaches are typically recommended for trauma-related dents or scar-related contour irregularities, and what level of improvement is realistically achievable.