Restrict data while downloading pbix files.

Hi, Anonymous 

when you download a report, you download it  entirety – meaning you get the whole dataset and report configurations, not just a filtered subset.

If you do not want to share whole dataset use RLS. 

Refer: https://learn.microsoft.com/en-us/power-bi/enterprise/service-admin-rls

As of my last knowledge, there isn't a built-in feature in power bi that allows you to restrict data or apply filters when downloading a pbix file from the pbi service. When you download a pbix file from the power bi service, you tipically get a copy of the report as it was last published. However you can implement best practices Row level security, Export data feature use it wisely.