Hola Selena, cómo estás?
Mixteco and Náhuatl are two beautiful languages that are spoken in Mexico but, it would be hard to get some who speaks those languages since no many people speak that language now.
In Mexico we are 180 million people and only 1 million aprox speak that beautiful language.
You are going to be very lucky if you can meet someone who speaks that language:)
Que tengas un buen día.