The economy of Nigeria is currently on a live support machine, the economy is in dire need of respiration. Exporters are finding the situation not funny as they cannot get a good return in investment after bringing in goods into the country in hard currency, because inflation is on the high side, and local retailers purchasing power is weak. Nigeria is an oil producing state, just like Qatar and other oil nations that are doing well, so why is Nigeria own different.
Just a point here that you should note that Qatar is no doubt a source of oil, but its economy does not only depend on the oil as they have also diversified their investments, and their ways of earning money are also not based on oil products. While Nigeria, I think, totally depends on oil revenues, it does not have tourism popularity like Qatar.
The disasters of the economy not only depend on the oil imports and exports, but they also depend on the type of leader and the level of corruption happening at the governmental level. By all means, I can say that there is less corruption in Qatar and more in Nigeria.
And talking about countries in oil other than Qatar, they mostly have different policies, expenditures, and the level of security provided to foreigners either in the field of tourism or getting investments from them. When more investors come into the country, the economy grows, but bad cases do the opposite. Overall, I hope Nigeria will recover its stable economic state soon.