Additionally, the researchers found that life dissatisfaction indirectly influenced right-wing populist voting through two key attitudes: political distrust and anti-immigration sentiment. Dissatisfied individuals were more likely to distrust political institutions and view immigration negatively, which in turn increased their likelihood of voting for right-wing populist parties. Notably, anti-immigration sentiment emerged as the stronger of the two mediators.
And this is the key point of right-wing propaganda. Destroy trust into organizations, sow sentiments against immigrants, spread fear by overhyping individual crimes, produce anxiety. Basically "make people angry and fearful".