Are your children starting school in a couple of weeks? That is a good place to meet other parents, and it will give you a common subject to discuss. Most School councils welcome new parents to help out with planning events. The library is another great community resource.
In many larger Canadian cities, there are cultural centres for various groups - the Chinese Cultural centre, Ukrainian, Greek etc. They sponsor movie nights, conduct classes in language and culture (dance, crafts, martial arts, sports etc.) If you are close to a centre for your country of origin, perhaps you could make some contacts there.
It is hard settling into a new place, but Canada had a large immigrant population and a long history of immigration. There are places to help - good luck finding them.