Cartridges are usually simple click into place.
Refer to your manual.
I suspect none of us here can help further without actually examining your printer.
you could also try - www,fixyourownprinter.com
type your printer model in the field.
Also Canon customer support will may be able to point a way
I have a canon i860 printer that will not print any text, images, or photos, only prints, but...
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I have a canon i860 printer that will not print any text, images, or photos, only prints, but incorrectly, cyan, magenta, and photo black during the nozzle check maintenance function, and keeps giving an error in the automatic printhead alignment function. It will partially complete a manual printhead alignment. I have tried to clean the printhead, I have replaced all of the ink tanks, and have replaced the print head, but nothing has corrected the problems.