Are all the right wingers on this forum 12 years old?
A normal human, when given the choice between "there's a global socialist plot against me" and "Maybe I messed up", will choose the latter. However, deniers are very different from normal people. Denialism is purely a conspiracy cult now, so they actually will rant at length about the VastSecretGlobalSocialistPlot against them.
So, don't waste your time trying to sway deniers with logic. They weren't reasoned into their positions, so they can't be reasoned out of their positions.
If you want to change the mind of a denier, you have to think like a denier. They are purely emotion-driven creatures, so you have to play to their emotions. Give them a virtual treat every time they wander towards a thought that isn't completely crazy. When they make a virtual mess, give them a scolding and rub their nose in it. Train them like a puppy, but understand they're much bigger and less intelligent, so that training them to behave will be both mentally and physically exhausting.