The corruption of Palpatine’s predecessor was a lie to get him elected Chancellor and he tricked Padme into elevating him to such a position. Then he tricked Jar Jar into giving him emergency powers which he never intended to expire. Tricked the Jedi into a frame up of a treasonous coup to overthrow him with the help of Anakin. Just so he could wipe them out.

The prequel Jedi were really dumb, almost like the Spaceballs quote, evil will always triumph because good is dumb.

They keep doing dumb things like accepting the Clone Army, training with them becoming their military commanders when Palpatine was the leader of both sides of the war and had the same clone army created.

AND they keep saying the Dark Side clouds everything as they continue to do stupid stuff just because the plot requires it.