I think chat groups like that are mostly found around us but of many groups, some are unclear spam groups. My advice anyway, you better join an international trade community, usually they have a chairman or moderator so that chat group is directed.

Next, I found a blog that discusses a number of chat groups, indeed most of it is paid but certainly paid groups ones have far better quality than free. The point is those who are in it experienced people and you can exchange ideas about trading.
https://tradingreview.net/best-day-trading-chat-rooms/
https://www.benzinga.com/money/best-trading-chat-rooms/