I have never taken anything like this before so I was skeptical at first before taking the personality test

I have never taken anything like this before so I was skeptical at first before taking the personality test. I didn’t believe that one can measure someone’s personality based on questions. But I was surprised when the result of the test came out. Although I disagree with one section, the rest of the sections are true and describe exactly what I am. From the Negative Emotionality section, it says I tend to become anxious and nervous which is completely true. I overthink about most of the things and worry a lot. Especially in class when I have questions, I’m afraid to raise my hand and speak up in front of class. So I end up not asking most of the times.