Most women tend to be less direct when it comes to people they are attracted to they may touch their hair or talk with them or laugh more frequently but even with these signals guys still may not engage further out of fear of misjudging those signals

If the girl is just being friendly and you take it as her being interested in you she may stop being your friend

If she's interested in you but not direct about it you may never know it

I as a person have been asked out multiple times as a joke so even if I was actually asked out I might see it as a joke as well

Girls need to be more direct as most guys wouldn't reject most girls