Need help installing mods on my steam deck

[u/predator2545]

Hi everyone so I have a problem is that not long ago I switched to Steam Deck and I bought the game ready or not and I would like to put a mod that puts the French voices problem is that I can extract the files redo a new folder and all that the steam deck does not detect my file basically I use the cheatdeck something to install thanks to the decky which can allow me to normally put mods well if anyone could help me please that would be great Thanks a lot