Shame on Facebook: No free speech

It seems to me we're back in the middle ages regarding Facebook censorship. I regularly take photos of participants participating in a specific parkrun, and then place then on that venue's Facebook page for the people to look at and downlood. On Saturday I got thanked many times by people passing me for doing this. However, when trying to upload to the Facebook page, I was informed by Facebook I had transgressed some regulation and am not allowed to post anything on that page. So it seems to me we're back in the middle ages: free speech is something not allowed and big brother ala 1984 of George Orwell will decide what is allowed to be published, and what not. Same on Facebook! Perhaps we should whisper into Elon Musk's ears to take over Facebook too.