When I started CrossFit in 2013, I didn't know how to make friends. I was 26 years old and apparently never learned this essential skill, and apparently it was the root of 99% of my issues. I had some friends but for the life of me I can't figure out how or why they wanted to spend time with me. I was a real gem back then. Read: a huge pain in the ass and a loose cannon.
If you go back and read some of my first posts about CrossFit, I talk about being nervous about having to sit alone and be awkward until class started. It sounds a little stupid to me now, but it never occurred to me to walk up to anyone and just introduce myself. And that wasn't just at CrossFit. I confidently navigated work situations, but the whole meet people, decide you like each other, and then start hanging out thing was really out of my wheelhouse.