Filter By Apps - dahboard - What is displayed?

I do not understand what is shown under the apps filters in the dashboard.

Normally only my content should be displayed there.

Or to a maximum of my friends.

But with some filters everything is displayed which is public.

Example: For events, all stream entries are displayed to me which are public. Also for groups and sides.

In the case of videos, tasks, updates, reposts, surveys, photos, links, etc. will only show what I or my friends have posted ..

I'm missing the app filter a clear structure what is displayed.

Again. Basically, a new user can only display his own content or, to a maximum, that of his friends.

Can this be set somewhere? Or is it a mistake?

If, for example, you click on pages, only the content of the pages I have liked should be displayed.

Otherwise you lose very quickly the overview.