Tell us more. I cannot imagine you know the streets of Dakkar as well as those of Addis and Jberg. And do you speak Arabic, Swahili, Hausa, Amharic, French, Oromo, Yoruba, Igbo and Zulu? This seems like a stretch by any reasonable standard, but maybe you are the special one.
I suggest you just go for photographers coming to Uganda where you apparently live. I also suggest you rotate your photo if you expect to get photographers as clients.