"Low CGPA" means different things at different institutions, and the honest answer to whether you can study in Canada with one is: it depends on how low, in what, and how long ago.
Where the line usually sits
Most Canadian graduate programmes state a minimum for the final two years of undergraduate study rather than the whole degree. That distinction matters: someone who started badly and finished well is often eligible where a straight average would suggest otherwise.
Work out your last-two-years average before assuming you are below the line.
What can be weighed alongside it
Several things carry real weight where a department has discretion. Relevant work experience, particularly if it is several years. Publications or a substantial research project. A strong reference from someone who supervised your work directly. A graduate certificate or a second degree completed more recently and more successfully.
None of these erase a grade average. They give a department something to point at when it makes an exception.
Routes that tend to work
Course-based master's programmes are frequently more flexible than thesis-based ones, because a thesis programme has to find you a supervisor willing to take the risk.
A qualifying or bridging year exists at some institutions specifically for this. It costs a year and it works.
Colleges and polytechnics — as distinct from universities — offer post-graduate diplomas with different entry requirements and strong employment links. In Canada this is a respectable route rather than a consolation, and it is undersold to international applicants.
What does not work
Applying to twenty highly selective programmes and hoping. Agencies promising admission for a fee. Anything involving an altered transcript — that ends an application permanently and can end a visa.
Address it, briefly
If your statement can explain a dip — illness, family circumstances, working through your degree — say so in two sentences and move on to what you did afterwards. Do not build the statement around it. Panels respond to evidence that the problem is behind you, not to the explanation itself.