Adjusting Language settings in Microsoft Edge...
Select the "Setting menu" by clicking on the settings menu " ... " at the top right of the screen (or "Alt + F") and select "Settings" at the bottom of the screen, then select Languages
Select the menu " ... " and click "Display Microsoft Edge in this language", then "Restart" your browser.
If "English (New Zealand) or English (Australia)" options are not there, then you can add them by clicking "Add languages"...
Search for your Language, select it, and click "Add"
Once added, make sure you have selected to "Display Microsoft Edge in this language"