I want to chat with gynecologist for free consultation for my wife diseases

There are no doctors on this site, but plenty of informed people who can help you.

What "diseases" does your wife have?

And of course a doctor would not tell you about your wife's exact condition without her approval.

What sort of issues, and what has your wife told you

There are no sites anywhere that have MDs sitting around willing to chat for free.
The first response above is from a nurse in the US who knows as much about medical conditions in women as anyone.
So please state what your wife's problems are, and also what country you are in.

Sadly there would be no such thing as a free consultation. You can chat with the educated people on this site, they can give you support, or some answers to your questions, but they cannot offer a consultation. A consultation would involve more than we can offer.