RLS on DimUser?

This is a RLS question: I need to show the user’s own data and also Totals; but NOT data from any other specific user.

I have my Fact table with several measures, and my Users dimension (DimUser)

In the FILTERS, I have a “user name” filter, where all users shall select only see themselves. (there’s a few super-users who should select among all users…)

On my .pbix I show 2 visuals:

• Visual 1: own’s user data,
• Visual 2: shows totals for all users.

I am able to do this because  I use DAX’s  REMOVEFILTERS function.

How can I do the RLS I need? The user accessing shall see her/his own data and also totals; but not any other user specific data.

I am already doing the RLS in the USERS dimension using [username]= USERNAME()  but of course, its filtering all the way to my fact and my Visual2 gets messed and both visual display on the user's data...