This also happened in my country, Indonesia. In fact, recently one important person was arrested on suspicion of corruption. And the amount of money he corrupted was truly a very large amount. In fact, if the amount he corrupted was distributed to all Indonesian people, it would be enough to make all families have large capital and would be helped economically. And the corruption seems to have been carried out by only one person. And I imagine that there are many more perpetrators of corruption out there who are making all people in various countries, including Indonesia and Nigeria, experience economic difficulties as is currently happening. It seems that if a country can be free from corruption then that country can become a fairly rich country and the people will be prosperous.
In my opinion, the failures of a nation apart from the problem of corruption are:
1. Domination of super rich people (3% of top bankers in the world) in crucial economic sectors in every nation.
2. Through banks they make a country entangled in a debt trap that will never be resolved.
3. Through the dollar, they control the world monetary system complete with its tools (swift system)
4. Through the stock market, control many strategic businesses (state-owned enterprises in various countries)
There is a system that makes/manages us according to what the system owner wants
Unfortunately some arguments are wrong, I will explain myself !
1. Domination of super rich people (3% of top bankers in the world) in crucial economic sectors in every nation.
- This is not a problem, it is a natural and logical state of affairs. Do you want poor, low achievers to dominate ? The wealth of these people is the result of their knowledge, skills, and I agree - also their connections. It's wrong to consider their success as a disadvantage. These are the realities of life - some are better, some are smarter, some are stronger, some are richer, some are more influential, and some are higher

....
2. Through banks they make a country entangled in a debt trap that will never be resolved.
_error. No one is forcing you to use the services of a bank ! It seems to me that you have not quite correctly described the essence, probably you wanted to say about loans of international banking and financial structures ? But then the question is why take loans? Just earn money and secure your economy ? Or do you think credit funds should be given without interest and obligation to pay back? Ok, then lend me 1.000.000 dollars on such conditions ?

3. Through the dollar, they control the world monetary system complete with its instruments (swift system). Excuse me - but where did you read such nonsense? SWIFT is not about the dollar, not about the U.S., here you are very much mistaken or knowingly give incorrect information!
I recommend to study the information about this project: SWIFT was founded in Brussels in 1973 under the leadership of its first CEO Carl Røytersköld and was supported by 239 major banks in fifteen countries. The new system was designed to establish common standards for financial transactions and to form a common data processing system. The basic operating protocols, rules of accountability were established in 1975, and the first transaction was conducted in 1977. The first SWIFT operational center in the United States was opened by Virginia Governor John Dalton in 1979.
4. Through the stock market, control many strategic businesses (state-owned enterprises in various countries)
A very big misconception. Tell me how the stock market controls and influences your company for example ? I apologize, but this is an attempt to come up with a "convenient answer to inconvenient questions", such as "why my country has a low standard of living". It is easier to find a "distant culprit", to understand the problems that have only local problems - non-payment of taxes, nepotism, corruption, unwillingness of the population to work,.... These are unpleasant moments of our life, but always remember one simple principle - if you have a disease, and you treat fictitious manifestations, but do not treat the disease itself - the disease will defeat you!
Do not deceive yourself and others, inventing "fairy tale culprits in our problems", reality is much closer to us than the world bankers, SWIFT, stock market.... And the most unpleasant thing is that we ourselves create all these problems, and then "bankers", "capitalists", and others take advantage of it.