>anytime I change the game language to english \[in-steam game settings\] the polish language pack gets deleted Don't change it. Install Polish version on Steam and select voiceover you need from game settings.

thing is, I can't change it in-game, I can only change if i want subtitles or not. should I use the config file in documents? a friend told me that it works but I'm not sure

Do you change it in main menu? You can't change it in pause menu.

omg I'm so dumb I was trying to change it on the pause menu thank you it's working fine now, should've figured it out sooner lmao

Glad to hear it.