How do you get a girl to hang out with you? I know her and we only say hi and small talk, but I wanna get to know her?
You gotta try to up the conversation to more substantial things. For example ask her questions that will reveal a little bit about her personality like what are her hobbies, what she wants to be when she gets older, etc. The deeper and more personal the conversation the easier it'll be to transition to asking her out.