If girls get scared walking by me, is it a sign that I might be unattractive?

a lot of girls in my age range (19-25) tend to get either scared, irritated, or uncomfortable if they walk by me as if I'm trying to talk to them which I'm not

I don't view myself as either too unattractive or very attractive

If girls get scared walking by me, is it a sign that I might be unattractive?
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