Flutter Quiz In My Flutter App

I need a multiuser quiz app added to my flutter app. Users can create their own quizzes and other users can participate in the quiz. Quizzes, Scores, player info need to be stored in the Firebase database.

Here’s a link to show basically what I need. But I will need a design that fits into my app’s design, etc.

https://www.geeksforgeeks.org/basic-quiz-app-in-flutter-api/