As far as I know, there are a large number of people interested in Bitcoin and cryptocurrencies in Nigeria, but I'm not sure whether it's legal in that country. However, the low cost of electricity is attractive to miners.
Bitcoin mining requires good infrastructure, such as a stable electricity grid and internet connection, and I'm not sure if this is available in Nigeria. Many countries prohibit Bitcoin mining because it consumes a large amount of energy and may affect the stability of the electricity grid.