Need Help

Can someone help? I’m 28 and still no friends. I was isolated as a child which contributed to this and never to got mingle with other kids. This also formed my Delayed Adolescence which forms during the formative years. As a result I didn’t develop social skills, I’m also mal-adjusted to society and people my age.

Why can’t I keep friends or make them? And how do I fix this?

I’ve tried a therapist and it doesn’t work.

TL;DR: How do I maintain and make friends? And develop social skills? Was isolate as a child.