I am reposting my solution from another post
1-choose what language you want in the propriety of the game in steam, it will download the file usually it is 4Go+
2-move that new file to a safe place and go back to steam and change back the propriety of the game to the language u want it to be launched with.
For example, I want to play dub jp.
I download the jp audio and then go back and make the game launch in English.
3-Move the file u saved with the new Language into the file.
and now every time I launch the game it is in English and I can choose the jp or eng audio.
File location is : "C:\Program Files\Steam\steamapps\common\Cyberpunk 2077\archive\pc\content"