I live in Canada, we have very strict laws about who can get and how to get guns. 80% of gun crime is committed by people that don’t have a license, and got them from unauthorized places. Making something illegal doesn’t make it go away, just creates a black market. Criminals also don’t give a hoot about laws, by definition.
The relevant statistic is not the one you mentioned. One expects the outcome you cited. What is the frequency of gun involvement in crime in Canada vs. the United States? That’s the relevant comparison.