Hey there, amoht;
Changing the game's language (without purchasing another copy) is possible.
First, you have to change your EA/Origin "Region/Language" settings to the desired one.
(It's possible that you can leave your country alone, and just change the language. But I would do both, just in case.)
Then. you have to do a full un-install / re-download / re-install.

Afterwards, you can change these back to the appropriate ones for your situation.
There are other ways to do this if you have access to the original retail disc version. But these require a significant amount of expertise with folder and file manipulation. 😕mileywink:
On my own rig I can switch between English, French, and German on-the-fly, but only for the menus and VO, not the supertitles. (I know if I worked harder I could figure out that part too, I just haven't bothered.)