Agreed while moderation is indeed censorship. It is censorship with a real purpose to keep things organized and hopefully in doing so creates a positive environment for the forum:d given purpose.
Op if your post is hidden by flagging you need to wait or contact a mod privately to ask for clarity. It is possible that maybe your topic(s) were not within the forum’s rules/concept. Moderators may not have reviewed the flag yet.
However in any event it is a good idea to pm/DM the mod team to understand why it was flagged. It could be that a rule is maybe not clear enough.
Not long ago a post if mine was flagged. A mod reached out and asked some questions. They were satisfied with my answers as to why I had posted comment I had. And agreed my comment as a result was not off topic. Sometimes something clear to the author is not clear to others reading.