With the low amount of runners, I don't believe it's really required.. You'd probably get better help from the official CR Discord.

discord.gg/clashroyale

Adding each other would probably be easier, I own a pretty big discord that you guys could join if you wanted to. But If we got a lot of people we could make a CR speed run discord.

I own a Discord server with 1200 people that used to actually be a CR server (just for Clash Royale in general) but we changed to a chill/gaming server 6 months ago. I don't think they'd appreciate it if we used that to talk about CR speedrunning nowadays xD