I was 28 when I landed a “job” with a mission organization that sent me to Africa, prior to that I had spent 1/3 of my life overseas, moving to Africa was not my first international experience. I’m not sure what your background is. However if you don’t have a job contact, have never lived outside of the USA and choose to buy a ticket in the hopes of landing a flying job to gain flight experience-your chances are very slim for success for all the reasons others have mentioned. Living in Africa, or any developing region, is N O T H I N G like your typical life experience in the USA. In fact many U.S. citizens are poorly equipped for success in cross cultural settings. Living overseas can be absolutely wonderful. It’s best for your sanity and chance for success to have some sort of organized introduction into Africa (some sort of sponsorship) rather than just showing up at the airport by yourself. It’s great to be 21-anything is possible-just don’t get killed in the process.