I have never celebrated #CanadaDay (or the #FourthofJuly) and I don‘t know any Indigenous person who has. It has always been a day of mourning for us.
There are tons of resource lists being shared now more than ever. Search them out. I will add that it‘s not enough to just read Indigenous authors. #DecolonizeYourShelves but also decolonize the way you read, analyze and review books. Racism is still a huge problem within bookish communities.