It does sound like American style was not a good choice for you, since few other people in your area dance it. And it's possible the quality of teaching is not so great. I wonder where the studio teaching American learned it?
But don't bash American style based on that. Done well, it's a great style of dance with lots of room for creativity.
And I don't think all your time learning American was wasted. Hopefully, you learned some basic things about dance, like frame, rhythm, and how to move, that you can use in international. You'll learn it faster than if you hadn't danced at all before.
And if you ever come to the US, you'll have lots of partners for your American style!