The problem with free will is that everyone is entitled to use theirs as they see fit, even if you vehemently disagree with their choices.
Sometimes, the best you can do is tell someone that they’re headed for the abyss, but if they’ve already spent countless hours convincing themselves that the abyss is a lie and they intend to prove it by throwing themselves in it, there may not be much you can do to change their mind.
So no, I’m not proud of having said this, but occasionally you have to cut your losses before you get dragged down along with the other person.
For instance, I see you claimed here that Julian Assange was a Russian asset, and despite people calling you out on it being nothing but speculation, you never provided any evidence for that claim.
So how about you dial it back a notch and talk about things you can actually prove.