Re-check your Office architecture via File > Account > About Word and download the correct matching bit version. Missing Proofing Tools
An offline installer for Office 2019 language packs is a standalone file (usually an .img or .iso image) that contains all necessary components for a specific language—including display, help, and proofing tools—without needing to download components during installation. These packs are necessary to: Change the user interface (ribbon, menus). Add spelling and grammar checkers (proofing tools). Provide local language Help content. office 2019 language pack offline installer
Now you will execute the command to pull the offline installation files from Microsoft. Re-check your Office architecture via File > Account