I can only surmise the fear in their heads about what could happen is worse than what is happening.
“Why we would turn into Soviet Russia, (not cool Putin Russia), bare grocery shelves and having to ration toilet paper!”
In my experience with extreme conservatives from my hometown it is kind of more insane than that. My friend who I have previously mentioned (a conservative evangelical voting for Biden) told me about a recent conversation with her mom.
Basically, her mom spent all the Obama years saying how the various problems the country had were due to Obama being a terrible president or whatever. When my friend pointed out that things are so, so much worse now her mom's response was that things were only bad because Trump is so good, and Satan is pulling out all the stops to defeat him. I'm not kidding - this was a real conversation and her mom is not alone in that opinion.
So what do they think will happen? Nothing in particular, they will just consider things to be bad because the 'bad person' is in charge and will do whatever mental gymnastics are necessary to get there. Similarly if catastrophe continues in a second Trump term it will be the fault of Satan, or the Democrats, or whoever.