I don’t know what’s wrong with me and it’s freaking me out.

I like people but I don’t overly care about them? Sure I care if their well and I hope their doing good in their jobs but If I don’t see them I don’t care and about half the people I meet don’t seem to like me, as if on instinct. I’m good at making friends but i never understood the need to text them. I just feel like I’m out of place. When I was a kid I used to walk away from my friend group and sit by myself, just because I wanted to. I didn’t want attention, I just wanted to sit by myself. As I’m getting older the worse this is getting. I’m not autistic or adhd (doc says) and I’m not anti social I just feel there is a disconnect.