This Sims 4 Language Changer has all necessary language string files and it's very easy to use and updated to be compatible with any version of The Sims 4 1.72.28.xxxx [March or April 2021]
If you get "empty bubbles" or crashes in your game when changing your language with previous methods it means that you likely have a single language version of The Sims 4 installed instead of a multi language one. So, to solve this issue, you should use the new repack below, which also contains the necessary language files.
1. Download the Language Changer with Strings
You can download the Language Changer with Strings for The Sims 4 126.96.36.1990 by clicking in the link below and using your Torrent Client.