Gender Slicer for Different Columns

You can create a Field parameter and add the gender column (or both if you have them separated) over there:

Go to Modeling tab in the ribbon menus and select New Parameter -> Field parameter

Then, drag & drop the fields from your right on the "Add and reorder fields" area:

Click Create.

Then, on your visualization, remove the Female and Male columns and include the parameter field you created.

And there you go!