The reason for the poverty of a country is not the lack of a financial plan, but the lack of implementation of that plan. The main reason for the plans not being implemented is corruption. Poor countries also make economic plans every year to overcome poverty, but 50-70 percent of the budget prepared for the implementation of the plan is lost due to corruption and the remaining money is used to improve the economy of the country, which is not enough.
For example, you can look at India. They deserve a better position, but due to corruption, 5% of the people in their country still earn less than $ 3 a day and about 25% of the people earn less than $ 5 a day. They even have to fight for water, fight for education and fight for housing in some states. Despite a huge population, India is ranked 5th in the world in terms of GDP. If they could control corruption, then maybe their position would be in the top three countries. You can even look at countries like Nigeria, Iraq, Venezuela and Pakistan. They have the resources to get out of poverty and they also have the people to arrange financial plans, but they are still very much behind due to corruption.
Financial plans for a developed economy are of no value if those plans are not implemented. The main obstacle to implementing plans is corruption. That is, these countries should arrange and implement plans to combat corruption, then there will be no obstacle in planning and implementing plans to improve the country's economy, and the country will also develop.
Literally, EVERY single country could be a good country if people all agreed to it. It's not even about the president of that country; it's about the public. Sometimes, nations like China, for example, do change things and become the biggest nation by putting misery on its people, so that future generations would live better. For example, if you are someone who is just starting work today in China, you will get a ten times better life than your father and a hundred times better than what your grandfather had to face.
People literally died from hunger two generations ago, and people would jump off factories from over-exhaustion a generation ago; now they are the biggest and living a better life. Nobody says you need to face that kind of misery, but we should find a way to make this happen without being forced to. We should all get together and try to make our nation better. "What" needs to be done is simple, but nobody wants to do that because they won't get the benefit; the future will, and nobody agrees to that.