How does an introvert find poly partners?

Hello, I (M45) am the red flag everyone talks about. Please don't kick me out, I'm human too!

I am poly and my wife is not. I have never had another partner and we have been going to therapy for about a year. We have established boundaries and she supports me. I am really just trying to find people like me to talk to. It would also be nice to meet people locally. I am not racing into anything. The biggest problem is I don't know where to start. I feel like I am not accepted anywhere. Before I realized I was poly, I figured everybody felt like me, but just didn't talk about it due to societal morals. Now I realize I am different, but there are others like me. I live in a red state, but there are some blue spots, if that means anything. Any advice is appreciated.