If Outlook is adding a Teams meeting to every new appointment, you can disable this functionality.

At the top of the Inbox, click on File

Choose Options on the left menu, most likely near the bottom of the list.

In the Options screen, select Calendar on the left to bring up the Calendar settings.

In the Calendar settings, look for Add Online Meeting to All Meetings.  Uncheck this option.  Click OK to save and return to Outlook

If you have any questions regarding this, please contact Extension IT at extensionit-help@illinois.edu