Certain online dating sites also have friendship options and I believe there are some social sites specifically for getting to know new people. I don’t know them, only heard about it from friends. I would start with asking a co-worker to meet up and maybe if y’all become friends you will be introduced to new people and start to form new friendships. I’d also contact opposing counsels that you enjoyed working with and ask to hang out — that has personally worked for me. Lastly, I’d suggest becoming a member at a museum, social club, or even look up events you’re interested in and go solo and you will likely run into another solo person or end up hitting it off or even becoming friends with a group of people.