According to the manufacturer’s specs, the One Plus Nord N200 should work well with Koodo minus 5G cellular. (Koodo does not offer 5G cellular yet).

One Plus Nord N200 - under heading Connectivity

@MiniPaquin note: if you want to use VoLTE or VoWiFi, avoid buying anything that is not on Koodo’s list of supported devices (https://www.koodomobile.com/en/help/volte).  While OnePlus devices are perfectly capable of both features, the Koodo (and parent Telus) only let you use it on devices they have certified and list.  If you don’t care about those features, then you should be fine.