exchange language together

I'm looking for someone who wanna learn Arabic language free on condition that teach me his/her language

Hi Maeen, I would like to assist you to improve your English and also hope to improve my Arabic, with your help.

To start off, your notebook entry could be improved by wording it as follows;

I'm looking for someone who wants to learn the Arabic language for free, on condition that he/she teaches me English (for free).