I will write my response about my advice it helps your community will be visible
If we do often, post in your community. anyway based on my experience, @Roger Waters you are already set up your community, I check you write your descriptions, cover are good, but if you can create more captivating cover, much better. But if cannot, it’s okay. anyway you need to post daily , even one post. it helps to become visible more your community, You know the secret also that our community will discover more, if we are more engager, connect more to other communities, we can learn a lot of them along the way, and maybe some of them join in your community, because when I am consistent some of the communities, they know me more better, the trust is built up, and they will check your profile and join, That is my experience. Comment of there post that are relevant, and likes, it will helps your profile to level up