The language of InDesign change
- After you log into the Creative Cloud from Adobe logged in, click on "Apps".
- Then, you go with the Cursor on the App, the language you want to change. In the case of InDesign.
- After that, click on the Gear on the right edge.
- In the Pull-Down menu, select the "preferences".
- Click on the tab "creative Cloud".
- As soon as you click on the menu item "Apps", you will see all available languages. Now select the desired language.

The language of InDesign set (Screenshot:adobe.com)
If you want to know, where you have plenty of Adobe InDesign Templates and templates to download find, read on.