I don't think there is a team or country that does not have any challenges in one way or the other, but some are being managed effectively to the extender it does not escalate to the entire people and their supporters, there are other complicated teams and countries whose performance are below average and yet they are doing better because we could not know the exactly situation of what is happening from within their players and the team needs, it all depends on how everything is being handled and taken of utmost priority.
You know why the case of Nigeria is different? They've all the money to restructure their sports sector to be one of the best but corruption has eaten deep into the leaderships. Of course there are poor countries like Senegal, Cameroon, Zimbabwe and the rest of them and it is understandable if their country leagues are below standard, but you might even see some of them even doing better than Nigeria. The sports sector here has been neglected for a long time, and we are suffering the effects.
Nigeria has a very large population of sports lovers that sports should be one of the economy drivers of this country, if only the leaders were less dependent on oil and less corrupt, they could've harnessed the sports sector and the potentials it holds.