If there Germans managed to support themselves on 100% renewable energy I wouldn't say they needed to go nuclear again. As it is the Germans rely on more than 50% dirty energy which is polluting all of northern Europe and people ARE dying because of it.
So, sure there are dangers with nuclear power if there's an accident. Ideally there shouldn't be, historically there has been a few (seven with fatal outcomes to be exact)[1]. Still with modern reactors that shutdown instead of melting down we should be able to safely handle virtually any accident. With burning fossil fuels the deaths are not _if_ there's an accident, they are a _consequence_ of polluting the air. And the 800000 annual deaths caused by coal burning doesn't even include deaths due to global warming [2].
[1] https://en.wikipedia.org/wiki/Nuclear_and_radiation_accident... [2] https://endcoal.org/health/