Alphadef

Pretty new to Lemmy as a whole. So when trying to decide where to make an account, I ultimately settled on programing.dev as it's ab instance that aligns with my interest, but now that I'm getting a little more used to navigating I'm realizing a minor issue. See, obviously I'm a new convert from Reddit as many are, and I don't expect every subreddit to already be a Lemmy community, but I've realized that by picking an instance that is fairly focused in its scope, if I wanted to try and fill in a gap where a subreddit has not been recreated yet I either need to find a way to get it made by someone else or make additional accounts on other instances. So thusly I am curious, is the former an option? In this case I was hoping to make something along the lines of r/ImaginaryKnights, because fantasy knights and armor are pretty cool, but obviously that's not a programming thing. Any ideas or tips? Hopefully this is a good place to ask.