I'm in the same boat essentially - all my girl friends live in different states and I didn't move to NJ until after high school. I've been meaning to try putting myself out there, but I also feel like I've forgotten how to make friends in adulthood 🤣. My mom and stepdad live in Denville, Morristown is pretty busy on the weekends! My stepsister joined an improv group just for fun and to help with social anxiety. Something I am considering!

ETA: I have a friend out in Arizona who got a dog and started going to dog parks - she has made tons of friends that way! My personal experience up here is that people are very friendly and always willing to strike up conversation. Especially if you are a regular and go at the same times of the day/week. My first (both rescues) was terminally ill, so we weren't able to go often. My second absolutely hated strangers so it was a danger to other humans to take her. Maybe whenever I'm ready again I'll give it another go.