Germany's exit from nuclear power was decided way back in the early 2010s. When the pipeline was destroyed the last three remaining plants were overdue for maintenance, didn't have any more fuel and also no one to run the plant for significantly longer. They extended the shutdown until spring and that was it. Stop spreading the lie, that this was some kind of rushed decision or that it could have been prolonged much further.
Building new ones isnt economical and also wouldn't produce any electricity until the late 2030s
If the exit was a mistake 15 years ago can be debated, but the discussion is worthless now, no matter how often this gets pushed by the party that fucked up the buildup of renewable alternatives in the 16 years they were in power