For me the problem of nuclear waste is a big factor in regard to my opinion of nuclear fission plants. I'm sure the designs are a lot safer nowadays and we don't have natural catastrophes that pose similar threats to these power plants here in central europe and yet I oppose them because of the nuclear waste.
[1] https://de.statista.com/infografik/20000/geschaetzte-menge-d... [2] https://www.energate-messenger.de/news/200160/bericht-europa...
[Edit]: In regard to coal - coal has been a large source of energy for Germany since the industrialization because we have access to it. Germany has been so dependant on it that in-case of being cut off from oil there are considerations to convert coal into gasoline. Because of this dependency it was subsidized for decades. It's not surprising that with wind energy having a low in 2021, coal is currently in first place again. The current goal seems to phase coal-power out by 2035-2038 which I hope will happen sooner rather than later.
I think the only reason the phasing-out of coal is actually happening in Germany is the prospect of less dependency on oil (with more electric vehicles on the horizon).