Making Friends While Grieving

I'm 23F, recently graduated college and if making new friends post-grad wasn't hard enough, I now have to navigate it after the death of my mother 5 months ago. I didn't have many friends before and the few that I had, I don't feel very close to. Not close enough to talk about my mom with them, and it's so hard to talk about with people that don't understand. Especially as a young adult. It seems like literally everyone has both parents. I don't think I've ever been so desperate to communicate with someone who knows what I'm going through. I've moved to a big city (NYC area) it shouldn't be so complicated to put myself out there and find people. I just feel so outside of myself. Like I've forgotten how to socialize. Does anyone else feel like this? What am I supposed to do?