Microsoft has set Teams meeting as the default for all meetings. This can cause issues if you are looking to setup in-person meetings or you are adding a webex call to a meeting
Web Client
Open Settings and search for "Events you create"
Uncheck the Add online meeting to all meetings box
Click Save in the lower right corner
Outlook Desktop
Click on File and Select Options
Click on the Calendar Tab and uncheck the Add online meeting to all meetings option
Click OK
After this your meetings will require you to toggle a Teams meeting