Scholars who support gun control in Canada argue that gun control in Canada reduces violence by restricting access to guns (rather than by imposing severe sentences on those who use guns illegally). Therefore, the argument goes, further restrictions on guns would make gun violence even rarer and would thereby make Canada a safer place.
The link below provides access to a number of articles arguing in favor of stricter gun control laws. It argues, for example, that having more restrictive gun laws in Canada would reduce the number of suicides, the number of fatalities in domestic violence situations, and the number of children being accidentally killed by firearms that they find in their homes. All of these things would make Canada safer.
I strongly suggest that you follow the link below and explore for yourself. You can get much more detail there than we are able to provide here.