Just a very dull social life

So I’m M18 and I’m in 12th now but the thing is I don’t get shit. Like first of all I’ve not talked to any girl from our school since I entered my 11th. I liked one girl once in 7-8th grade and since I have not caught feelings for no one. I asked that girl out once and she was like we can be good friends and I knew that that’s just her polite way of her saying no. And still even after her rejection I haven’t moved on from her and don’t even know what to do now.
And even after 12th I’m gonna be doing my future studies here only in my home town not leaving to any other city coz we have a huge ass business so I’m required to stay here only. So if any f’s wanna have a genuine long term connection dm🙏
(No, im not creppy)