I need friends

My best friend has outgrown me but still says I'm her best friend but that's not really the case. She's normally with her other best friend and whenever I go over to hers she will ring her like I'm not in the room with her. I keep saying to her that it's okay to admit that I'm not her best friend anymore but she keeps saying that I am. I truly believe that actions speak louder than words so I think she has grown out of me or I've grown out of her but just don't have any other friends. I need advice to make friends now because I don't know if I can stay in this friendship if it's just making me feel sad everyday. I'm also going to uni and I'm debating whether to move away or not as I want to start fresh but I'm scared if I don't meet new people or anything.