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Discord might be an option? It's free, you can have various text channels as well as voice channels, and you can control user access pretty easily.
This way you could have just an open channel for any crypto discussion you want, maybe another dedicated to charts, one for urgent announcements of major news, etc, etc.
Very flexible and easy to use, but obviously just a suggestion.

I'd join a discord crypto trading chat room if somebody made one.

I just don't know if there is enough trades throughout the day to warrent a chatroom yet.. I get days when its crazy busy, but then there are lots of days where i get 2 or 3 crypto trades

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