Get the Office Deployment Tool from Microsoft .
Once the download finishes, you can copy the entire C:\Office2019 folder to a USB flash drive to install it on target computers that do not have internet access. To install the language packs on the offline machine: office 2019 language pack offline installer
Select , and in the prompt, choose Offline installer from the version drop-down. Get the Office Deployment Tool from Microsoft
To ensure a smooth experience, follow these steps sourced from Microsoft Support and technical guides from Dell Support i need offline language pack of office 2019 or office 365 To ensure a smooth experience, follow these steps
If your organization has a Volume Licensing agreement:
The 40 fully supported languages include: English, Arabic, Bulgarian, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kazakh, Korean, Latvian, Lithuanian, Malay (Latin), Norwegian Bokmål, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Serbian (Latin, Serbia), Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Vietnamese.
: This defines where the offline installation files will be saved.