I suggest you do a google search for gyms/studios in your area. Once you have a list, then create a resume and stop by the studio/gym location to drop it off. If it’s a large gym then you might need to contact the manager to fill out an application. As a studio owner, I appreciate the time and attention it takes to visit my studio to introduce yourself and ask questions. An owner may not have an opening right that moment, but they will remember you vs. just getting a generic email inquiry.