Hello Sarah,
There are no smart TV apps for Microsoft Teams. However, you can use a standalone Microsoft Teams Rooms on Android:tm: (MTR) video bar that is ideal for your huddle or small meeting room.
You can also do screen mirroring or cast MS Teams to your TV.
You can check the link below:
https://www.apowersoft.com/mirror-microsoft-tea...
There are also enabled devices for Teams, check it from here: https://www.microsoft.com/en-us/microsoft-teams...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Please let me know if you need further help.
Kind regards,
Jayzar