The game card only says "English" as available language but the text on the page is in my language.
Will it have multiple languages in the future?

Seems like it :) This is from their discord:

"Right now the game is only available in English, but at full release there will be a lot more languages available! I can't give you confirmation of which ones just yet, but if you'd like to request a specific language please let me know, it's super useful to measure interest :)"

Oh! That's great! Thank you very much :)