This.. I am going through the same thing. I moved from KC to Houston two years ago. Hubby has a cattle ranch here and I was going back and forth for two years prior, and when my youngest kid graduated high school and went to college I had planned on moving here. I had so many wonderful friends in KC, and I have zero here. The only people I interact with are at work. I just have hubby and my dog, and I feel the city is too big to make sustainable friendships. Hell I drive 35 miles to work in the city and that's a short drive compared to my last job.
It's hard. And you're not the only one. I think a big reason I haven't made new friends is because I hang on to the old ones, going to visit them whenever I can. I definitely need to get out more.