Welcome to italki. The site is primarily a marketplace where teachers offer classes and students pay for classes that fit their schedule and budget. In the public forum, people sometimes offer conversation in their native language in exchange for conversation in a target language. It can be difficult to find a suitable conversation partner because of incompatible time schedules. I have not had any success finding a conversation partner, so I pay teachers for conversation. You may have some luck at a specialized site for language exchange. Good luck!

Hi Xavier. Welcome to Italki. Yes! Simply write a post explaining who you are and what language you are looking to improve, and you should get replies. Good luck!

It is possible but difficult due to peoples' schedules and life changing all the time. If you are wanting to speak English free4talk.com has a lot of people ready to have conversations 24/7.