Creating a filter + distinct in SharePoint Online with JSON?

I am currently working on a sharepoint list. I would like to change the view report, that there are no duplicates for the region, and that always the last entries of a region are displayed. But so far i only see some solutions with ajax.

SO my question is, if it´s also possible to do this directly online in the box with JSON to format it like I described it?

Best Regards, 

BS1010!