The result of neoliberalism, increasing wealth inequality, decades of lies and misinformation in mainstream media and refugee streams triggered by unnecessary wars and climate change.
It is INEVITABLE that Europe is going to become more and more fascist and it has nothing to do with Germany specifically. UK is arresting people for posting online about the genocide in Palestine. France is rather doing a coup than let actual socialists rule. This is the inevitable result. Nothing can change this now. Prepare for it. I'm going to build a boat.
It's an east-west problem, Nazis are especially big in former eastern Germany. Since smart young people leave the area, the loud minority of authoritative complainers increases. They completely lack empathy and are unable and unwilling to change their lives. They only want to drag everyone down and project their self-hatred about that on others. Of course, they also hate on people who want to change sth. for a better future in this area. Those idiots are still the minority, but it must be harderband harder for the normal people to live with those idiots, especially on the countryside.
It's exactly the same with the American south, anyone with an education escapes as fast as they can, leaving the uneducated poor who are recruited by the historical landed gentry through racism.
And in France we can see the liberals would rather do a coup than let actual socialists rule. The people in the east have more understanding of socialist theory and it's limitations, and they might actually understand better why the neoliberal austerity policy of Germany won't help them. So rather than inequality based on class and wealth they choose inequality based on identity like race. Because if you're getting fucked anyway, why wouldn't you.
They have even less of a clue of socialism than the people in the west. They believe not only that immigrants are the problem but also social spending, taxes, unions, scientists and students.