having a hard time making friends

I am a freshman in college and I was so excited to meet new people and make friends. I go to a large public university and am also part of a dance team but I am still struggling to connect with people. My roommate has friends and they are kinda friends with me but I always feel excluded and they go off and do their own thing most of the time. My roommate isn’t in any extracurriculars and I am, I feel like I should be making SOME friends at least. All of my friends are her friends and I don’t feel very close to anyone. How can I branch out and connect with people better like she does?