Nobody sees me as anything other than a friend or "that guy"

in college and I've been struggling with loneliness forever. I have friends and coworkers and people to be around/hangout with, and there good people and such and they cover the looser relationship part of life, but when it comes to deeper connections or intimate relationships I'm alone and no.matter how hard I try nothing works.

I hate saying this out loud because I always sound so whiny and pretentious, and yes I know and understand nobody owes me anything, but after a while it gets to my head. awhile ago there was this girl I feel hard for and we basically did everything together, long story short o supported her in everyway I could yet she dropped me like a steaming bag of shit the second a new guy came along. my confidence was kinda okay after that and I tried to meet other girls naturally but they all fell through for various reasons, some being it simply didn't work/feel right, and others being getting stood up for no reason or ghosted and whatnot. after that I tried dating apps, spent awhile making my profile look good and share my personality and such, I used hinge alot because I liked how you could comment on other people profiles and add a comment or ask a question, I tried to start conversation there and nothing, got no matches on the other sites even after a year and changing my profile, and eventually I just slowly gave up and began to believe that I'm unwanted.

idk like there's no evidence that points to otherwise, people only really reach out to me when they need something and never do for any other reason. I haven't asked someone out in a full year and I find it impossible to talk to a girl I don't know. it just seems like approaching strangers isn't acceptable anymore unless you have the charm of a Disney price, which I don't, and the only ways to improve is to get practice, yet I feel even approaching someone I don't find too interesting or attractive is still awkward and weird. idk I'm too scared to get hurt again so I kept myself stuck in this cycle.

idk it just feels so impossible for someone to love me. I think about someone wanting to cuddle or go on a date in public or even hold my hand, and the idea feels so alien, yet when you look round campus there's couples every 14 feet. some of my friends have people actively throwing themselves at them yet choose the most toxic guys to stay with and then event to me about how much they wanna break up. idk the concept of unconditional love being something I receive from anyone other than my mom doesn't feel real.

yeah idk I'm just defeated and scared and I don't know what to do.