No society will grow or develop when the leaders or government aren't doing their job right. Many failed society was colb as the result bad form of government projected powers and administrative costs. Many Africa leaders are fixed or low in development priorities or even society. When leaders fails in their capacity to build expected society it cause such societal crime and poverty-stricken members.
This also can lead to poor standard of living, bad government ruins the beauty of progressive society and create unemployment, bad government detorate peace and escalate hunger, theft, insecurities and cyber crime to the youth as only give choices where a failed leader is the head.
You are right, in fact, for a country to run well, the provisions of its constitution must be implemented correctly, in which case it is very important to have a corruption-free rule of law, improve the quality of the education system, equal rights for all, and accountability of the government of that country to the people.
Along with this, the government of that country must be the right guide of the economic system. It must ensure that the money used for the development of a country is being used properly.
When it is seen that the government of a country is corrupt, then surely that country will lag far behind in terms of development, as happened with a country in South Asia.