I NEED URGENT HELP ?

I have a crush on a guy in library. He looks like a nice person and I caught him looking at me more than 5 times. We are both preparing for university exam and we are on the same age.

So basically, he is with his friends all the time he is never alone. I want to talk to talk to him. If i find him alone, should i go and talk to him? If i talk to him what should i say? I have very low self esteem and If i talk to him It feels like he will make fun of me with his friends. I don't know what to do.
ALSO ,,, I FOLLOWED HIM ON SPOTIFY BUT HE DIDN'T NOTICED OR HE PRETENDS LIKE HE DIDN'T SEE?
I NEED URGENT HELP ?
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