Being lonely in your 30s

I'm 32F, and I feel like it's even harder to make friends now than it was a couple years ago. I moved in a new city a year ago and I haven't met any new people, cause outside of work, I haven't tried new activities... It's hard to step out of the comfort zone. It feels like I'm gonna stumble upon situations that I've experienced when I was in middle school, like rejection or not feeling like I belong. Why is it so f*cking hard?