Question

I wanna make friends with US natives and so we can exchange culture between each other

Answer 1

Hi. I don't know any websites where you can make friends with Americans, but I like your idea. And what do you think about communicating  in English with  people from other countries (not only from USA)? Because I would like to speak/write in English with someone, too.

Answer 2

Hi.I can advise to you one very helpful website.

Busuu.com

Here you can register and create your own profile.Then you can do many exercises and chat with native speakers!!!

Answer 3

I use "Conversationexchange": you can decide with whom  you want have meeting on Skype or face to face  and so on!

Answer 4

I'm working on this site http://saundz.com/ - it's an application that lets you practice American English pronunciation. It has voice recordings of native speakers and you can compare your pronunciation with theirs, but you cannot interact with them. Have a look and let me know whether you think this would be helpful to you. Here you can start a free demo:  https://learn.saundz.com/register/loginRegisterGuestUser.htm?lang=en_US