How can I make real friends at university when I feel totally alone?

The girls in my class are very cold, and the boys are either working or hanging out amongst themselves. I'm a university student and I just sit at home. I went to a private school in high school, and everyone was a bully. I couldn't make any friends, I'm always alone. I'm watching Reels videos on Instagram, And I'm very bored.
How can I make real friends at university when I feel totally alone?
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