How to escape the acquaintance zone?

If there's a guy or girl in my class that I think is cool, how do I get him or her to hang out with me, or join his or her social circle (s) in lunch times? how do I go from being a classmate to getting invited to a group hangout or a party? or for a girl, being able to date her? Cliques hinder my ability to create friendships and relationships. and I have a very small social circle, that isn't good enough for me to make other friends and meet girls. I will start uni soon.
How to escape the acquaintance zone?
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