The Clone Wars plan devised by Sidious and Plagueis was a great success, with the destruction of the Jedi Knights and the ossification of the Senate. The scenario was that security prevented a Jedi assassination attempt on Palpatine, who had become the supreme military commander due to the centralization of the Republic's domestic part. This also uncovered a scenario in which the Jedi Council had a backdoor relationship with the enemy's Count Dooku, and had cleverly manipulated the expansion of his army to prolong the war. In his spirit, he submits the Jedi coup recordings to the court as physical evidence. In this way, all Jedi are condemned as traitors who attempted to overthrow the Republic, and the clone soldiers are justified in issuing orders to kill their superiors.
When the people see the burning Jedi Temple, they are relieved that Palpatine was deceived by the Jedi, but Palpatine has solved the conspiracy and returned the favor. As a result, the people enthroned Palpatine on the throne, having won and ended the war.
The plan depended on how cleverly Sidious and Tyranus could deceive the Jedi. Palpatine survived and succeeded, so Sidious took it all.
So if Palpatine was killed, did it really fail?
First of all, the premise is that Dooku was dead before the Jedi killed Palpatine. The only people who knew about the entire plot were Sidious himself, Anakin, who learned of Palpatine's identity, and some Jedi, including Mace Windu, who was briefed by Anakin.
If Palpatine had been killed in this state, the maces would have explained to the Senate that the war was a clever trap for the Sith. The witness is Anakin.
"The chairman was a Sith Lord named Sidious. Dooku is also a Sith Lord. They controlled the war behind the scenes and created a dictatorship through military buildup and constitutional amendments. It was controlled by the Jedi and Dooku, who falsely claimed to have made Palpatine a dictatorship."
So the Jedi Council begins to rebuild democracy under the supervision of the Senate to determine who will take Palpatine's place and take over the authority of the Supreme Commander.
Now, will the people be satisfied with this?
If the extinction of the crisis had occurred and democracy was restored with the de-centralization of power and the return of all the powers Palpatine had acquired to the Senate, then public opinion would give some credence to the idea that Palpatine was a Sith.
But Sidious was confident that the Jedi would not return the Grand Powers. Because the Jedi, disappointed with the corruption and corruption of their politics over the years, wanted their people to crave centralized power.
So Palpatine believed that even if he died and Anakin and the Jedi explained the truth to the world, the public would interpret it as they just wanted an excuse to take over the power that had been gathered in him.
This idea was justified by the fact that there was no evidence to prove that he was a dark lord of the Sith because he killed Palpatine, and since Dooku was dead, it could not be demonstrated that he was manipulating on both sides. Therefore, the public will support the Jedi conspiracy theory and criticize the Jedi for not de-centralizing. They will naturally understand that the Jedi have killed Palpatine and seized all power.
Then, in accordance with the laws of democracy, the Jedi will have no choice but to hand over full power to the senate or back off, leaving full power to the vice chancellor.
In the grand scheme of things, corruption and corruption will occur. Anticipating this, Sidious anticipated that the people would mourn the loss of their chance to correct their democratic government with the death of Palpatine. Translated with www.DeepL.com/Translator (free version)