When you set notifications for a team/competition/match the app can send you a default set of notifications. It is possible to change what those defaults are in the settings of your app.
On Android you click on 'settings, then 'Push Notifications' then click on the three dots in the top right hand corner before selecting 'Edit Default Notifications.'
From there you will see a list of all the different notifications you can choose, just turn the sliders on or off to choose between them.
Here is a video:
On iOS, its a similar process, you go to 'Settings' then 'Push Notifications' and next 'Default Notifications.' You will then be able to choose which notifications you want by using the sliders.
Again, here is a video: