In my opinion, a dictatorship with a genius omnipotent dictator is most effective, because it does not need the parliament to discuss and always make the correct diction. However, it is not possible to have such a dictator.
I'd like to live under a democratic government because usually, a democratic government gives people rights to choose their lives and have restrictions on the power of the government. It is much safer.
My least favorite type of government is dictatorship because it is very risky to let one person to in charge of the whole country. Even a small mistake the dictator makes could cause a disaster. Just like how CCP did in during the covid-19.