Just so everybody knows, the mirror is actually more reliable than the camera. Even though people say “the camera never lies”, it distorts your photographs a little bit. It has to turn a 3d image (you in real life) to a 2d image (a photograph) and consequently skews the proportions a little bit.
Also, “photogenic” is a real thing. Certain faces photograph well and others don’t. It’s all down the angles, proportions and size of your features.
Have you ever seen someone stunning who looks great in professional photographs and not in candids? Yeah, that’s because there’s a huge difference between a professional and an amateur. Professionals know how to minimise the issues cameras have. Lighting, angles and even the distance you are away from the camera plays a part (the amount of distortion varies depending on how close you are).
TL;DR if you think you look great in the mirror but not in the photo, trust the mirror. You look great!
NOT ONLY THAT, but when you look in a mirror, you’re seeing your face in motion, how others would see it. In a photograph, you’re still, and it can make small flaws and the like seem a lot more prominent, despite them being quite minuscule in person.