The girl I like fights with other boys, but she doesn't look at me and ignores me.

that is, she wants to attract your attention. She is interested in you, so she can't treat you like other boys (she will feel unnatural when facing you). Just take the initiative and you should be able to find out that she is special to you. Come on! The above guess is based on the fact that she doesn't know that you like her. If she does, you should take the initiative. There is a great chance. )