I get your frustration, but, you joined a website that is essentially run by the feds, explicitly hostile to freedom of speech, and is anti-2A, happily clicked “sure thing” and agreed to their terms and conditions that allows them to restrict whatever they want on their platform.
He’s surrounded and protected by a team of former elite military personnel. He has no regard for individual rights, nor does he give a sh*t as to whether you have a right to own a firearm. He matter of factly talked about how the FBI contacted them about shutting down certain topics about hunter Biden prior to the 2020 election, and providing them with information on users without warrants, and he saw nothing wrong with complying.
As others have said, delete Facebook. You’re essentially logging on to a site run by the federal government and freely giving them all of your meta data, not that they aren’t collecting it from everything else you (and all of us) do online.