Military uniforms use tons of Velcro, see if somewhere near you sells that. (Idk what Canada’s version of an army PX is)

https://militaryuniformsupply.com/products/8-piece-hook-loop-replacement-package-military-tactical-ocp-tan499

In this case they sell the hook side and the loop sides separate, make sure you buy at least one set of each if you go with this random website I usually use