You could set “Who can bypass the lobby” as “People I invite” in Meeting options as below:
People I invite means that meeting organizers can have greater control over their meetings by enabling a new lobby setting where only Calendar meeting invited users will be able to join directly.
You could modify this option when scheduling Teams meeting or during a Teams meeting.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.