realizing you exist

But the issue is:

a) mentally checked out 95 % of the time, either from exhaustion or mental state just trying to get through it  

b) i completely cannot read whether people like me or not and tend to assume no or that they don't care bc growing up people tended to think i'm weird cause my family isn't like theirs (not christian or catholic, not wealthy, curly hair, nerdy and goth artist parents) and my vibes were weird (probably autistic so they treated me accordingly /neg) which means that i tend to let people pass by and don't catalog info bc it's not worth being seen as the the weirdo who's too friendly right? 

finally c) i'm just plain bad at names, i sat and talked to a girl at least 3 hours a week and didn't learn her name for a month. she knew mine the whole time 

now where this comes in now is bc i had to wait fucking 30 minutes past my pickup time for food and was letting other people who came in to get food they just were not coming out so they didn't have to wait around but they saw me leave when i eventually got it and was looking around to let them know they brought some out and to go check  and i heard "hywel got his sandwich!" which made me???? how the fuck do you know my name???? like i know they're in my dorm building but???

Now i'm scared that the reason i don't have friends is bc i don't realize i exist to other people and people know me. I do tiny things and try to be nice but what if people think i think i'm too good for them or aren't interested when i really just don't realize they like me? I don't know how to fix this i am just this way, sorta deadpan and tired constantly. i want friends so bad i just don't know how to connect to people