Your best course of action is to contact CRA directly.
From what you have indicated, it appears that you are not physically a resident of Canada, nor have you been for more than a year. In most situations like this, you would file as a non-resident and pay taxes on only your Canadian income. However, CRA considers residency status and related tax obligations on a case-by-case basis. It's best to contact them directly. Here's the link: https://www.canada.ca/en/revenue-agency/corporate/contact-information/international-tax-non-resident...
