So you don't need to invent the wheel again. You can just google existing groups and join conversation. There are hundreds of generic cryptocurrency talk channels in discord, and some of them have tens of thousands of users. I am in several private ones that are focusing on lowcap gems. And one that is for circle of friends. Some of these public servers are just for talking cryptos, some of them are linking news and signals.
For example Reddit's r/cryptocurrency has a discord server with 50k+ members.

So the question would be, what your discord channel offers that others don't?