Don’t forget to help those communities out in the beginning. I’m big into Trap music, and thankfully the trap community migrated over to Lemmy somewhat, but it also requires me to post more and comment even more than I did before to help build those communities up. Content is what helps these communities grow, and especially good content. Keep people on topic for communities where they’re specifically on a topic. Like Twitter it was never going to be a day one knock out, but like Twitter it’s about a slow bleed over time that eventually leads to a demise.