Sometimes we include content in our vanilla reports that is beyond what you'd like some of your users to see. In Power BI there's options for removing content so that your users see what you'd like.
In the Power BI Service, switch to edit report mode, to manage these options. Once in this mode you could hide, delete, or reveal our various pages. Just be careful when revealing a page that we keep hidden by default, we often hide them so that they only appear with user provide context, like a drill though or page navigation.
For more details on editing content in Power BI check out this article from the Microsoft team on the wide range of options available to workspace members. Report View in Power BI Desktop - Power BI | Microsoft Docs