Nails are ugly. Inferiority. What if I am laughed at by my classmates? Dare not go out. I doubt my social fears.

Well, onychomycosis has some symptoms. I suggest going to the hospital.

Then I don't think too many people will care about the problem of fingernails, so go out boldly.

If you don't regard it as a shortcoming yourself, nothing others say will have much influence on you, so be confident!