I don't believe that Africa has an average 68 IQ

if that were true, their societies could not function whatsoever

It's held by duct tape and foreign intervention.
For example: there's been nationwide blackouts for over a month now (more than usual), some people haven't had electricity since February.
Most of our infrastructure is dated and poorly maintained, literally all the old railways were built by the British, and the new ones built by the Chinese.

How do you even have blackouts when you are an oil exporter.

We EXPORT crude oil, we don't have the equipment (anymore) or the know-how to refine it.
My parents actually worked In one of last refineries in the country, for close to a decade they had no work going on. People would literally bring beds to work.

How would you describe higher education in Nigeria?

In public unis Sexual favours are common with university staff, some professors will tell you you're not going to graduate unless you fuck them, if you're male more often you just have to bribe them.

Getting into uni is also a matter of connections and tribalism, not to mention it's extremely easy to cheat

It's not uncommon for Nigerian youth to squat with their parents till they're like 30, or get a house from them (this applies to a small percent). Some of these rich fucks don't even understand the concept of working for something, a grown-up once asked me "why don't you ask your daddy to buy you (X) thing?".

I know for other black African countries, Indians or Lebanese run the economy, but Nigerians and Cameroonians tend to control their economies with key exceptions. No way Nigerians are that dumb or dysfunctional

The Lebanese don't quite run things here but they have a lot of big business, Tatiana Moussalli Nouri owns much of the media in Nigeria. There's a few tens of thousands of them and they're mostly in Kano, Kano being the only northern state with a decent GDP, almost equal to port cities.