Nigeria like my own country is rife with corruption, pretty sure having currency without the filter of the primary dealer banks, means they can easily funnel capital to all sorts of places with little to no oversight

While Africans we don't trust our governments, and cash is still a big part of the economy, African countries are one of the few places in the world where physical cash supplies continue to grow. To have a successful CBDC you have to eliminate cash

In addition, we have massive black markets for cash and forex, our tax base is small because of it, Africans remain unbanked, and many of us don't even have the identification to bother opening up banking, and trying to funnel people out of that behaviour and network effect for a system like a CBDC is going to be a tough sell

Nigeria is also not a unified country, it's made up of different provinces who even then are divided by 100s of tribes who all have different interests and don't agree on jack. The central government doesn't have the ability to enforce a CBDC short of certain metro areas like Abuja and Lagos.