I don’t understand

Sometimes when I post and don’t get any replies, I get extremely paranoid that im the only one with this problem and that no one can help because they don’t understand what im going through and just find me crazy, and I start thinking im a traitor to this app and that i’m just deranged. I feel like a lost cause and im scared that if I tell anyone what I went through, they’ll just be driven away from me and avoid me. It makes me feel so isolated and depressed.

I'm not sure how to explain why I feel this way but someone I no longer have on social media messaged me out of the blue after four years. I'm worried they messaging me to find something out about me or cause me harm for some reason. I'm not a very trusting person due to events growing up. Why can't I just except this person could just be messaging me, it just scares me that they must have had to search for me to message me.

it’s always like this. I get to talk to someone, we chat, then stop chatting or get very slow replies. but I can’t complain when I said that if I don’t reply, I’m busy or dealing with stuff. everyone has their life & no one is obligated to reply to me. I have learned that I really am just alone. I don’t want to force anyone or be obsessed. this goes for online friends. I only have 4. but they haven’t replied to me in days/weeks/months maybe. honestly, this has helped me not becoming dependent and wait for a reply like I used to. I would go on worrying for a while if someone wouldn’t reply for a certain time. I wouldn’t tell them ofc but I would become anxious. as for real life, I guess I can say 1. maybe 2 but one of them was a friend from elementary and we only met up once after sophomore year of high school. we’re now in college (actually, she graduated already) & have met up with her that day. we updated each other on our lives. it was nice, but I don’t think it was the same ‘best friend’ friendship we had as kids/teens. we don’t talk anymore. (only if I view her stories on instagram and say something) the other one I could say is half online/half real life. I met him online and we met irl a month in. he’s a good guy and honestly the first person that I like as a friend. someone I can trust, I guess. not fully, but definitely can be a lot of myself around. he’s been busy with life as well. he’s not obligated to reply to me. this one, I rlly like talking to but again, life happens. so I stopped being ‘excited’ for a response. in the end, it’s just me. my pain and myself. if I can’t make any friends irl (or maybe new friends online)(don’t get me wrong, I like the 4 online friends I have. they’re dear to me. they are just busy) at the end of this year during school, I will just give up. I tried before in my previous semester but it never happened. I am just going to accept my solitude. all I want now is either to not be here (sometimes), get a bike and ride by myself, or I don’t know. I don’t find anything appealing at the moment. sometimes there will be a spark but it goes out quickly. I genuinely do not see a happy life in the future. even after I told my dad of a ‘plan’ I had to retire early and keep learning in college to feed my curiosity, I just think maybe I’m not fit for living. I’m just tired. I try. I don’t find joy in many things anymore. it’s just not interesting. I just want to crawl up in my bed (as I am now) and move to a different place. I just want peace. will it be death that I find peace? or maybe living by a lake? who knows. life needs to let me rest.