How? They pick who runs, and if you suggest or even hint that voting third party is the only solution to that problem then you get in circular arguments with conservatives from either party that claim you’re voting for whoever the opposite of their genocidal fascist happens to be.
That’s nice, we’re doing that. The people going to sleep for four years don’t want change, they don’t want things to improve, they want to complain so it seems like they’re worse off than they really are. You’re not going to convince them until their lives are ruined.