That’s part of it another is that the right offers some easy answers to some very complex questions. They aren’t the right answers but they’re easier to wrap your head around. As prosperity drops, the time, effort and resources the average person can commit to understanding the complex problems facing their country also drop. This means the easy answers take root easier, and spread further and faster because the less informed are less resilient to them.
I recommend Scavenger SV4 It’s a very unique game where you send a rover down to a planet to grab what alien artifacts you can before your radiation exposure gets past the point it can be treated. You can bolt some of them onto your rover to make it better and send it down again. It also has several hundred different endings that are decided by how much radiation you absorbed and how much loot and what loot you brought back.