Many people will not respond, but don't give up. Just keep looking and keep sending messages. In your case, I would recommend that you send messages to native English speakers who are learning Arabic. They will be more likely to respond to you. Also take a look at this link: https://support.italki.com/hc/en-us/sections/201133628-Language-Partners

You might be fighting against statistics. If there are many more Arabic speakers wanting to find English speakers, than English speakers wanting to find Arabic speakers, then those English speakers may already have a language partner. Some people may also have outdated profiles. For instance, I was actively learning at one stage, then I slowed down. But I didn't edit my profile to show that I wasn't trying to learn as much any more. Perhaps you could be a little more active here? Ask a few questions, so that people can see that you are interested, and that you are a sensible person ;) then they might be more likely to respond. Another thing is to write some of your interests in your profile. That way, people can again see that you are a real person, and may be more tempted to contact you if you share interests. Are you using the generic italki hello message, or are you customising it? I must admit that although I usually accept relevant friend requests, I don't actually start a conversation unless they have changed that message, perhaps to something a bit more relevant.

I have to agree with Gary. I looked at your profile, and you have no picture of yourself. If you have your picture, you seem more real. And you also have no activity on your profile. Honestly, I also would not respond to your request because it looks like you are not dedicated to learning due to your empty profile. I help a few people who live in the Middle East and Russia (I'm from the USA), but they are dedicated students.