I know there are some sites dedicated for this but they are limited or freemium…
I would like to improve my vocabulary, grammar and pronounciation for better social integration, as I was communicating mostly in english until now.
In exchange, I can help you with french and english.
Skype preferred, maybe Jitsi or other audio software.
If someone is interested, please contact me by PM. 
(or Skype/email bobsynfig@outlook.com)
Please note, for transparency:
I have admin rights on this forum and as such, I have access to user’s details including email address of course.
Please be aware of it, don’t use your personal email to register if you want to preserve your privacy 