Hey Gal,
set the datasource of the dataview to microflow, and then,
in the microflow, retrieve the Account entity from the database, with Xpath constraint
[id='[%CurrentUser%]']
and the set the range to ‘First’ and then return the object.
And in the dataview, show the full name attribute.
you can refer to the image below, for the microflow,
Let me know if you face any issues,
Hope it helps!