The mortgage still comes down to whether the income, debts, down payment and property support the financing being requested.
What can be different is how that financial picture is documented. You may have only recently started building Canadian credit, your employment history may cross more than one country, or some savings and debts may still be held outside Canada.
That does not automatically make the mortgage harder. It means the application may need a different set of documents or a mortgage program that is designed to consider a shorter Canadian financial history.
There is no single “new to Canada” mortgage.
The right route depends on your status, ability to purchase, income, down payment, credit history, debts, property, and the lender or insurer reviewing the application.