Some people just don't reply back, others are picky, maybe busy, and then there other varieties of other excuses..etc. but wish you major luck^^[:

Maybe because you just want girls partners :)

I live in USA and am fluent in English. Also, I am interested in learning Arabic. We can help each other. :)

Hi¡ we can talk each other to improve our englis together¡

Turn on the ability to receive messages, that should improve your chances.