Feels like an alien

Maybe you're surrounded by people who have totally different personalities from you and think differently. Maybe it seems like no one really cares so it becomes a gnawing feeling of being misunderstood and feeling alone.

it's ok to feel like an alien, like you don't fit in or understand people. you don't have to vibe with everyone and it doesn't mean you're doomed if you don't fit in. Understand that most people are caught up in their own lives and only will be superficial in their interactions with anyone not in their immediate concern.

it's common with the overwhelming saturation of social media to think you're missing out on some grand people party, but it's not even a thing. we're only seeing what you wrote in your OP but no one here knows what you've been through. if you had a traumatic childhood (abuse, bullying, toxicity) it can really make you want to isolate since you don't want to trust anyone enough to hurt you. then ofc once you've pushed everyone away, you're going to feel alone.

sometimes it's the people who you consider your friends and even from your family. when everyone treats you like shit or takes advantage of you or is always hypercritical of you, it can hurt even worse than being alone.

even all this wall of text i'm writing could seem pointless and boring to you if you've already disconnected and detached yourself from it.

i highly recommend you seek the help of a mental health professional. it's important you find someone who can make you feel happy who cares about you and encourages you enough to help you not feel so alone and like an alien. try to find a hobby group and take the initiative in reaching out. not everyone will immediately warm up to you, but keep trying and take it one day at a time so you don't feel overwhelmed.

there isn't some free pass from hardship in life for anyone. so it's something you'll only see improvement on if you make a genuine effort at.