Koodo is not offering any plan with unlimited data.  So, you need a plan with data if you need to use it. And pick a plan according to your needs because data overage can be very expensive.

You can get unlimited data at either Koodo’s parent company Telus Mobility, or its sister company Public Mobile.  For the latter (Public Mobile), you get unlimited data (throttled to 250Mbps) on the two 5G plans, after your bucket of higher speed data is exhausted.  You can save more by picking a 90-day version of either of those 5G plans, making them relatively affordable.  Worth exploring, potentially.