Upvote:0
I put this search Nigerian to Cameroon, transiting to UAE, and it give me the following:
no visa need if you stay less then 24h (for transit at DXB)
you need a confirmed ticket for the second flight.
"Passengers transiting through Dubai (DXB) with separate tickets and checked-in baggage do not have to clear immigrations and customs if they use the baggage transfer service offered by the airport. Fees apply.". So it seems they requires that you uses a transfer service for your baggages. Or you should pass immigration, but so you may need to pay a 24h transit visa.
and the COVID test results, but these could change, so you may check later, before you start your journey.