This mirrored/asymmetrical stuff is mostly wrong. It can definitely cause an "uncanny" vibe but doesn't explain why you're a 7/10 in the mirror and a 3/10 in a photo.
You look different in the mirror versus photos because of the different focal length, different depth of field, and different angle.
I look pretty good to my own eye in the mirror but look like an absolute blumpkin in photos. However, you can take a pretty good selfie that looks like what you see in the mirror by placing the camera about 4 feet away from you and at a slightly elevated angle.