While there is no one global setting that would allow you to change the language of the report you can always do it manually. If you are looking to use this report multiple times for different clients you would only have to do it once as the report can be saved as a team template.
Step 1. If you wish you can change the widget title or description like so:
Step 2. If you wish for the metric name to be in the language that you want, you would need to re-name it by clicking here:
For more information on how to change these sections, please see the video below: