You don't hear a lot about many of them because there are only so many hours in the day:

* https://www.gunviolencearchive.org/reports/mass-shooting

Compare the list of Canada which fits on one page (going back to 1689):

* https://en.wikipedia.org/wiki/List_of_massacres_in_Canada

to the US, which has page-per-year breakdowns:

* https://en.wikipedia.org/wiki/List_of_mass_shootings_in_the_...

Canada has the sixth-highest firearm ownership rate, yet has a death rate lower than many EU countries:

* https://en.wikipedia.org/wiki/Estimated_number_of_civilian_g...

* https://en.wikipedia.org/wiki/List_of_countries_by_firearm-r...

So firearms aren't alien to Canadians, and yet the number of blood baths occurring is much, much lower. Incidents do occur:

* https://en.wikipedia.org/wiki/Toronto_van_attack

* https://en.wikipedia.org/wiki/2018_Toronto_shooting

but much less frequently.