What can I do if the game suddenly starts in the wrong language?
Check your Origin settings
Right-click on The Sims 4 cover in Origin and select Game properties
The next thing you can do find open the install data.xml
Right click on the Sims 4 app – Say Show Package Contents
Navigate to the folder Contents > _Installer > Open there with a right click and select TextEdit the installerdata.xml – watch my screen.
Look there to see if all the languages are displayed, like with me.
If that’s not the case, you’ve a regional version with four languages, including English as the main language.