I asked my question here: 1st post
Then I got feedback that my question was off-topic (unrelated to the community), with 2-closing votes, without any suggestion about which is the right community for it.
Then I asked the same question in the next community I considered related: 2nd post
Again my question was closed as off-topic (unrelated to the community), and no one proposed which is the right community.
My question is: what should be my next step, instead of hopping from one community to another?
I thought of Area 51 and creating a new community (e.g., "File Formats"), but I am not sure whether this should really be the next step.
I am also not sure whether Meta is for questions like: "Which community does my question fit to", or "Feature-request: create community with name: 'File formats'".