Google DataStudio Dashboard

I need someone who have an experiance in DataStudio and dashboards.

I need to implement very straightforward dashboard whcih should be dynamics, e.g. if I select nationality all the dashboard will be changed for the selected thing.

also, I want the dashboard to be access for only people who have (password).

Please show me your work on google datastudio to reward you the project and start working on the project.

Thanks