Hello Adman Somo,
Have you looked into after school programs at school and your local YMCA? Libraries, post offices and churches may have some community youth notices for you, also.
Natalie aka NAPS 2 B Fit.
I would check with your local YMCA (if you have one in your town) and/or community centers. I’m not sure what the regulations are in Canada for minors to be allowed in the gym floor, but you should check on this as well when looking for a gym. I hope this helps