Also, I know it’s hard (really hard) but college is a time for challenging yourself and expanding all sorts of skills. It’s good for extroverts to learn to be quieter, more reflective and less dominant in some situations, and it’s also appropriate for introverts to learn to make the first move and to start conversations with people you would like to know better (or just need to talk to). It gives you so much more power and flexibility in life to expand your skills.
Introverts can and do develop great social confidence! You can learn to do it on your own terms and for your own benefit, instead of feeling stuck having to accept others’ choices of whether to talk to you or not.
You might like the book Quiet: The Power of Introverts in a World that Can’t Stop Talking by Susan Cain.