Why do the considerably attractive people get insecure?

Celebrities like Megan Fox, Margot Robbie, Chris Hemsworth, and even supermodels render themselves as insecure. Despite the adoring fans that envy them. Appearance wise, I don’t understand, as I cannot find the answer to my own problems.
It brings me to wonder why I get so upset and depressed even though I get complimented on my outfit and face. I thought I would grow out of it since middle school, but it “fades in and out.” Anyone else experience this?
Why do the considerably attractive people get insecure?
Why do the considerably attractive people get insecure?
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