Just did my firat cold approach and was perceived as "wierd", thoughts and any advice would be much appreciated

Context: Am 17 and in Highschool

I approached the girl, she was sitting down watching a movies on her phone, said "hey",

Re:No response

Me: Yelled Aye!

Re:Immididietly turns to me

I then responded "hey, I saw you walking and I think you kinda cute and I want to know you better what's your name, she responds claudia, ask for her snapchat said she didn't have one (this point knew it was over), ask for her Instagram, told me to please leave am making her uncomfortable, and I left, proceeded to say I was weird but why, thought the point was to be direct

Thank You