Hello Amir Mehmood,
Yes, you are able to make your dream come true. Choose a certifying agency, study, pass the tests and you are on your way. I suggest you ask what local gym and fitness facilities require from fitness trainers, to help you choose the right NCCA courses.
Here is a link to get you started:
Natalie aka NAPS 2 B Fit.
Before you do anything, you should check first with the immigration laws in Canada to see what your options are. I’m not familiar with the Canadian immigration regulations so I can’t give you any more information. Please keep in mind that it doesn’t matter how many certifications you have if you aren’t allowed to go to Canada for work. I hope this helps.