Finland is a small country with a small population. It is futile to compare small countries with large countries. Small countries are much more likely to get lucky in certain regards, for example with a selection of suitable storage sites nobody lives close to. Or with a political climate that is amenable to such things. Also nuclear power was seen as an advantage because Russia is right next door. Finland is just in a much different position than Germany.

We had a nuclear storage site picked out long ago. Then it turned out it wasn't suitable. That's at least as much bad luck as "lack of foresight" or anything else. Finland didn't have that problem. If their storage site turned out to be unsuitable after decades of preparation, maybe they wouldn't continue with nuclear power either.

Last: You accuse others of propaganda but use a phrase like "in bed with the Kremlin" and spout conspiracy theories. You don't understand German politics. Mistakes were made. Presuming malice is convenient and lazy.