Lemmy is pretty bad at privacy, tracking not only your posts, but which posts you have read, which comments you have up or down voted, etc. Most "privacy" VPN services are scams, so don't expect privacy from them. Someone suggested using internet at public libraries, but those usually want you to log in with your library card, so that goes back to you too.

Best thing to do, I think, is run your own lemmy instance so it receives all of the posts and comments, so you can read what interests you without having the reads tracked on someone else's computer. Then avoid posting on edgy topics.

It disappoints me that Lemmy tracks reads and votes on the server. Reading should tracked only on the client (if at all), like with Usenet. Having your reading examined is even more invasive than having your posts examined. I'd be happy if voting were eliminated altogether, but if not, it could be made more private too.