Do you personally know (in real life) any ex-Muslims?

There's this girl in my cl, I remember like two years back, she was trying to readjust her lifestyle so she started wearing the hijab and tried to be a better Muslim. I don't know what happened but within a year or so, she removed her hijab, became an atheist, and sells pills to people at my school. I think she didn't know anything about Islam, that's why she gave up.