It's tempting to hire someone to help you with your immigration application simply because they speak the same language as you, after all, it's much more comfortable to talk to someone in your own language we understand that. But that shouldn't be your main criteria when you're looking for help with one of the most important things you may ever do.
Here's something you need to know about Canada. Canada has two official languages: English and French. All of your immigration documents, any immigration adjudications, trials or appeals will be held in English or French. Most likely the person reviewing your application, or hearing your trial, will have English or French as their first language.
So while it might be comfortable to seek out assistance from someone whose first language is the same as yours, it's more important to speak to someone who knows Canadian immigration law inside and out. That's why you should go to the best source of immigration if you want to immigrate to Canada, and that source is an immigration lawyer.