Sometimes they do!

PUA guff tells people all the time you can get any girl but it's just not true. Yeah it improves the odds dramatically but sometimes they have bad days, sometimes they are in relationships and sometimes they just want to be alone period!

It seems you have forgotten the teenage virtue of flirting - just wind them up about stuff, their shoes, clothes, say they stand! If you do this they will want to defend themselves, giving you the higher value and a conversation.

My favourite line is the 80s/90s called, they said they want their hair/t-shirt/jacket/shoes back! (with a cheeky wink)