The characteristic failure of a community MLBB tournament is not the bracket, it is the distribution of it. An admin updates a spreadsheet, screenshots it, posts it in Discord, and within an hour four different versions of the bracket are circulating with no way to tell which is current. Every team asks in general chat, and the same admin answers.
Every Tournamyx event publishes one public URL that needs no login and no install. Teams check their own next match on it, spectators follow the bracket, casters take the current state from it, and a result entered by an admin updates it for everyone at once. The screenshot loop disappears entirely.
Roles are per tournament, so several admins can report results from different parts of the bracket without any of them being able to redraw it. Events up to 8 teams are free with no limit on how many you run — enough for a weekly campus cup — and larger qualifiers use a paid plan. For running the event itself, how to run an esports tournament covers registration, check-in and no-show policy in order.