1- Go to, C:, Windows, SoftrwareDistribution, Downloads, And delete everything.
2- Try the download/installation of the language pack(s) again
About your extracting operation from Windows Update file, it may cause damage the .cab file then lead to install failure.
You may need to download language pack directly and install it.
https://www.ntlite.com/community/index.php?threads/language-pack-downloads-windows-10-8-1-7.17/
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.