Hi, there!
As a creator from Argentina, my sales from Steam would be in Argentine Pesos and, sadly, the economy in my country is so bad right now that I can't really bear the cost of having sales in pesos—especially considering the recurrent inflation. In addition, many of the people I hire for art, voice acting and other things are from overseas, and I have to pay them in USD as well.
Hopefully this changes if I ever move to another country (most likely Spain) some day. For now, though, I really can't. Sorry.
If you can't buy the game on itch, I also have the game available on my Ko-Fi shop, which accepts cards.