I don’t know about a Lemmy server with zero censorship, as I believe it is important to follow local law wherever the server is hosted. I certainly wouldn’t want to find any illegal content on a server I was a part of. But there are some servers that are perhaps more loose with what they consider to be content you cannot post on their server. I do not know any by name, but I know they exist.
Lemmy is a typically very politically left leaning platform, so I would imagine language that does not align with that would be causing you problems. You might try to look for an instance that is less left leaning, which may be easy to find as instances with opposing political views often defederate from each other very quickly. Which is honestly kinda like when some subreddits would auto-ban you because you participated in a different subreddit the mods didn’t like.