Do you have specific plan to practice English? If you have more concrete plan of practice such as time, content and topic, I would be pleased to help you out. 

Good luck to your learning. 

Yeah you are right finding English speaker as partner is not easy.which topic you find interesting.

I guess it boils down to how many English speakers are looking to learn Arabic. Speaking as a native, we get a lot of requests from people and i mainly reply to messages that stand out. If it's a generic message i tend to just ignore it so it might be worth coming up with something that makes you stand out and can grab the attention of native speakers.

Good Luck