The first place I would start is to see if there are fb groups in your area for personal trainers who do what you do. I know of several fitness communities in your area but they are for dance fitness formats, but I’m sure if you use the right search terms, you’ll find there is already networking going on in your area.
Linked In is also a good place to start meeting others in your field. Once you meet a couple of people who do what you do and link with them, it opens you to the possibility of connecting with their shared connections. I’ve met several solid business contacts this way.