Displaying your screen content to others during a Teams meeting or call for collaboration
In Microsoft Teams, screen sharing permissions are controlled by the meeting role and meeting options. Users who join as Attendees may not be able to share their screen. You could verify this with the meeting organizer, who can check Meeting options > Who can present and either set it to Everyone or assign your account as a Presenter.
You can refer via: Manage who can present in Teams meetings
I hope this helps. Please feel free to correct me if I misunderstood your request. If you have any additional concerns, feel free to comment below. I would be more than happy to assist.