Are you trying to on your own copy of the game?
tab and select English. Steam should automatically download the necessary files. Consoles (PS5/Xbox): On PS5, press the button on the game icon and select Manage Game Content to find and download available language packs. In-Game Menu Fix: far cry primal english language pack exclusive
The exclusivity was artificial and retailer-driven , not technical. It is no longer a barrier for most current players, but historical copies still carry the restriction. Are you trying to on your own copy of the game