Could you post a snapshot of your APN here? Hide all personal information before posting please.

I assumed you have checked your self-serve and everything was ok there?

Please see the attached file for APN name related issue.

From the snapshot, there are 2 issues there

Firstly, it seems you weren't in an area that received Koodo cellular signal. Have you tried to go to a different place to test?

Secondly, please show the detail of the apn. I can tell if you set it right or not from that snapshot.Make sure you follow this https://www.koodomobile.com/en/help/setting-data-your-non-koodo-phone

I already setup as per your recommandation but did not work.

Can you move to an area that you are sure you have Koodo cellular coverage?

As well, where did you get the phone? if it was an India model, it might not be compatible with Koodo network https://www.gsmarena.com/oneplus_nord_ce_3_lite-12198.php