Here's a quick tutorial:
Only a Microsoft Teams Global Admin or Application Admin can remove Trivia from your team.
To remove Trivia, follow these steps:
- From the Your teams menu, select the team from where you want to remove Trivia
- Click on More options (...) -> Manage team (⚙️)
- Click on the Apps tab
- Look for the Trivia app and click on the Trash icon on the far right
- In the popup window, click on Uninstall