I kinda relate to you, except I just have social anxiety and a little bit of trust issues. I'm not really good with socializing and communicating with people I meet in person though, but I enjoy socializing and communicating with people I meet on the internet.
I'd always play with and talk to myself when I was in Elementary, which might've been one of the causes of my social anxiety and trust issues. When I was in Preschool, everyone seldom played with me and none of my classmates even wanted to be friends with me. Right now, I am popular in my class and it's kinda a pain in the ass. My classmates over-rely and over-depend on me and it kinda bugs me. That might've been also the cause of my social anxiety and trust issues.
Apparently, being popular can also be painful, ONLY if people over-rely and over-depend on you and people being over-obsessed with you. I'm not sure if those are the only reasons of a painful popularity 'cause I think there's more.
I'm glad I have siblings to talk to and spend time with. When I was little, I would always play with my older sister. I played with my older brother too. Those are really good times. There are only a few people I trust irl, and it's obviously my family and a few of my classmates.