Idk why but this often happens to me.

When I'm not even making a move.

Classical example.Two days ago I entered a store planning to approach a girl working there that i found cute.

I felt confident and had good clothes on ect.

But I really needed to buy something.And i got nervous in meantime so idk if she picked on that.But as i asked her about certain item I need and i tried to explain what I need and I asked "do you know what I need" she immidetly put on bitch face looked in distance with dissintrested look not even looking me in eyes but avoiding eye contact completely and said something along the lines of "i have no fucking idea what you are talking about".

She wasn't like that before she doesn't interact with other customers like that. I lost the desire to approach because she seemed bitchy and completely disinterested.

So why does he hate me immidetly me specifically?

I don't think I'm ugly some people even say I'm solid looking nothing special but soild I think.Is it because I give off nervous vibe? But idk i just asked about prodcut at this point nothing that could give away my little nervoussnes.Are females that sensitive on even little signs of nerviouness that they become disquated by my presence?