Buying a car in Africa - help needed

Hello :). I am considering buying a car in Gaborone (as I heard it is easier to buy one there as a foreigner) and visiting southern africa and up north to uganda and kenya. Other way around is also an option.

Any advice and experiences on purchasing a car and reselling the car, or anything that comes to mind would be helpful. Is it possible to sell the car in uganda/ kenya or is it best to go back to botswana? Is there another country where it is easier to start (in general in Africa, not fixed on the route)

Thank you for all the help in advance!