Crush?

Ik ik people will probably judge this but aww well. I’ve been liking this girl for quite a while and I don’t know how to confess. There only a couple days left of school and I really want to confess but I know that they don’t like me back but I really want to try. They’ve liked me before but they don’t anymore. But there are so many hints that they don’t like me. Like constantly leaving me out and running of to talk to their other friend and are really hesitant to talk to me and sometimes choose not to answer me back and tell me about it. What should I do? I now want to get over my feelings because the more I think the more I think I shouldn’t confess.