Feature Tournament for Backend and Android Studio app

I would like a tournament section with these characteristics


- Admin organizes tournament.
- Tournaments can be team or solo
- The admin can decide the teams, expel, add or determine the team leader

that the options in parentheses can be activated or deactivated from the admin panel
(- Any user can create team to become team leader.
- Every team will have a team id.
- Joining the team will require team leader's approval.
- Team leader can approve or kick out his team members.)

- There will entry fee to join the tournament.
- Result will be published by the admin after verifying the game.
- Admin can set fee, reward etc.
- Admin can remotely create new tournament category and its images etc.