Hi Bhargav. I'm Greg, an installation specialist, 10 years awarded Windows MVP, and Volunteer Moderator, here to help you.
See these resources for manually installing Language packs offline:
https://www.mysysadmintips.com/windows/clients/...
http://systemscenter.ru/mdt2012.en/installlangu...
https://www.prajwaldesai.com/add-language-packs...
https://dennisspan.com/managing-windows-languag...
https://superuser.com/questions/1173754/install...
You may want to also consult with our sister forums for IT Pro's Technet:
https://social.technet.microsoft.com/Forums/en-... as this is a consumer forums.
There are also good IT Pro forums here:
https://www.techrepublic.com/forums/
I hope it helps.
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