A poll [1] done in 2008 found that 46% of the German population wanted to keep nuclear power online.
A poll [2] done in 2021 found that 53% of respondents saw a role for nuclear power in the "energiewende" (changeover from fossil to other power sources), 22% of them wanted nuclear to play a major role, 31% a smaller role.
In a poll done [3] in 2022 72% of the respondents wanted to postpone the shutdown of the remaining nuclear plants.
If your claim about that small fascist party holds truth the next Bundeskanzler will come from AfD. I guess this is not the case so either those other parties are not in line with their potential constituents or your claim of only AfD - which I assume is the small fascist party you're referring to - wanting nuclear power "back" (which is true by now, it used to be "wants to keep") is in error. Time will tell but in the meanwhile it is to be hoped that the next winter is a mild one.
[1] https://www.dw.com/en/46-percent-of-germans-want-nuclear-pow...
[2] https://yougov.de/topics/technology/articles-reports/2021/12...
[3] https://www.augsburger-allgemeine.de/special/bayern-monitor/...