What happens is that a lot of the traffic to all sites comes from the USA because Google, Facebook and many services are based there. If you promote your site in South Africa, this will increase the number of visitors from your target area. To do that, here is a detailed article on our help page to help you with this: https://portmoni.com/increase-traffic-website/ . Does that answer your question?
Related questions:
> there are very few from South Africa and that is obviously our target market, how can I change that?