Hi Aya
Welcome to Japan Forum!
It seems like you're looking for people IN Nagoya to study with, which I can't help you with, however, if you're interested in e-mailing or speaking over Skype, I'd be happy to help you out! I am a native English speaker and live on the East Coast in the USA. I have also studied Japanese for 4 years in college and in the 3 years since graduating have been trying to study on my own. I have also sent you a "private message via e-mail", so please respond to that if you are interested.
Also, just so you know, "fluent" is spelled with an 'L'. Maybe I can help you with remembering which words use l's and which use r's.
Have a nice day and welcome once again to the forums!