Insecure about face

This is going to sound so stupid compared to the other reasons people post here, but it’s really affecting my life in a negative way. I recently found out that people see you “inverted” and the way you see yourself in the mirror isn’t accurate. Anyway, I tried the inverted filter with my phone and I look horrible. Is this really how other people see me? I have heard that people do see you the way you see yourself in the mirror, but just flipped, that they don’t notice any of your insecurities. Is this true? Is there anything I can do to stop feeling this way? Thank you