Change Language?

Hey there, maybe someone can help me with this! I run Win10 in english, my keyboard is in english, everything in my PC runs in english, yet Halo 5 Forge, somehow got installed in spanish, There’s no language options, so Im wondering why this happened and how to get the game in English. Yes, I am located in south america, but it just doesn’t make sense to have all my system in english (I’ve downloaded other games from the Windows Store and they are in english…). Can someone help?

I got mine in Russian…
I’m Swedish…

EDIT: Not forge, fortunately, but the halo launcher… thingy… is in Russian

I found what looks like the localization files in the game’s directory, but I can’t open them. All the files are locked.

This is the directory, if you want to take a look: