There ARE very few active ones, that’s why. If I remember correctly the Ivory Coast was on the US sanctions list for a long time, and freelancers from there not able to work on Upwork.
Remember that Upwork now sets freelancer profiles to private if they have been inactive for a period of time, so you only see ones that have had some activity in the past 30 / 50 days.
U.S. Ends Sanctions Against Ivory Coast.
Please add Ivory Coast to the country list.