Report Restriction

1.

No. there are some work arounds, like this:

https://radacad.com/share-different-visual-pages-with-different-security-groups-in-power-bi

Essentially what he's diong is just making different reports

2.

No. 

Again, you could do the method above or something similar.

Unsure how this would look, but maybe summary tables of some data and use some type of Row Level Security (RLS). This is an in depth topic, so start here:

https://docs.microsoft.com/en-us/power-bi/service-admin-rls