I have a crush on a shy guy in my class

Yeah, as u guys can see by the title, I have a crush on this guy on my class. (For context I am 17 and He is 18)

I really freaking like him. He is so shy and so cute!! I always watch him (creepy lol) we only have one class together (religion) and we have the same lunch. He is kinda a loner. (He used to sit with some other people but now he doesnt and instead sits with another group. I sit in front of him. There are two tables--he sits at a table and me and my sister sit at the one infront of him.) He has friends, yeah but like...He's so quiet. I have his phone number from a group project we did some time ago!

The thing is...I freaking texted him last night. (I feel like it was the amount of energy drinks and just...stress)

The convo went like this

Me: Did u finish ---- assigment? Im stuck LMFAOO

he replies like 2 hrs later (mind u its like 8 so I was sobbing and panucakung. He responds at 10)

Him: which one?

(im like totally freaking out because I just had a melt down and stuff. I take some time to respond (15 min)

Me: Oh like the annotated bib thing Im so screwed.

Me: I dunno how to source a vid

Him: Basically expalins it to me in a monotone way...

Me: Yeah I was...blah blah (NOT IMPORTANT)

Him: Yeah just try to source it like ur other ones.

Him: I still gotta work on mine

Then I try to be funny IG (I putt a hahah emoticon on the "source it liek ur otehr ones"

Me: There are one other ones bc I started liek 10 minutes ago (insert skull face emoji)

AND HE DIDNT RESPOND!!!

Its the next day he still hasnt answered.

I feel so shitty like Im not the prettisest girl out there but Im not ugly!! Maybe race has to do smtg w it bc im not like...bruh. Everyone in my school is so pretty I just want to talk to him. I always feel butterflies whenevr he is there.

I was thinking that one my sister leaves for senior (we sit together) I can ask him to sit with me? Since he doesn't seem to talk to his friends at all..Ugh. But his friends are such bops and judgemental!! (I go to a really expensive private school)--They were making fun of a girl for being rich but extremly ugly and I felt so sick to my stomach. Maybe that's what they think of me too?

Please give me tips!! IK this is a long read but...IDKK