system
Given the following post, respond as if you're commenting on Reddit:
human
If Palpatine orchestrated the clone wars, why did the CIS win so many battles?
gpt
Because it had to look like a desperate struggle for the Republic's very survival. If the senate wasn't constantly terrified, they would have begun to squabble about petty things and concentrating less on what Palpatine wanted them to vote on, like giving him more and more emergency powers. 

Not only did it keep the senate terrified, it kept the general population of the galaxy supportive of the war if they knew the clones and the massive military production were the only thing keeping them safe from the CIS. They had to see the clones lose so they could see them win now and again and feel that spark of pride for the "good guys" and a twinge of hope that the war could be won and things return to normal. That pride and hope kept people voting for the same senators, contributing to the war and keeping things going exactly as Palpatine planned. 

On top of all of that, when the Republic lost a battle, it lost officers and military personnel who were either part of the Republic's tiny "military" before the war or people who would be inconvenient in the new order. Having them killed off was important so Palpatine could fill those roles with people he knew would do what he wanted.