I can’t even communicate with the people I personally know, my workaholic parents, my school friends, and a sibling who would rather talk to their friends than I. I believe that the majority of people I’ve been around with don’t enjoy my company. Which led to the fact that started to rely on my online friends often (I don’t share my personal info to them, we just talk about interests) I feel like this is uncommon among many people nowadays, especially this generation.
What you are experiencing is common among young people. It's okay to feel that way, it's okay to have online friends, but it's very important that you also form friendships with people in person. Just think about your actions from three perspectives: how an I representing myself, how are they receiving me, how might a third parts interpret my actions.
With these three views, apply them to every interaction that you have with someone with whom you want to be friends with. Sometimes we poorly communicate ourselves, sometimes we are received poorly, and sometimes people misunderstand how we are as a person. It can be hard, but figuring out how to at least be decent at social interactions is very rewarding.
I feel like people are growing apart from each other. Everyone aims to be loved deeply and cared for by other, but no one wants to do the same for someone else. You’re not alone in this, but it’s really hard to push that damn feeling of abandonment away, specially because it always comes back when you finally get something who cares about you. You get paranoid and anxious thinking that at some point, they’ll get tired of you and leave.
Join some community ed classes or find some other local club/org to take part in. It's okay to show up and just be the quiet person for a long while. It'll probably take months to years before you really feel naturally at ease in face-to-face interactions, but it's truly life-giving and a critical thing for our emotional health imo.