Combine filters

Hi, I'm new to using the program and I'm sure this is something very basic but I need help.

I am creating production graphs based on a database organized by date and area of production.

The graph is ready and I already applied a filter to see the graphs by date, but now I need another filter to be able to see the graphs by area too (combine date and area), but at the time of putting the area filter, instead of filtering by the name of the area, it filters me by the values that are in the column of each area.

How can I fix this?

Thank you

Best regards