All leagues have 95% real rules, ranking prizes, cards rules, foreign players rules etc.
How to add real African competitions on FM19Extract the contents of the .zip archive.
Move the .fmf files to:
Documents/Sports Interactive/Football Manager 2019/editor data
Create the last folder if it doesn't exist.
Open FM19 and start a new career save. In the top right of the screen, under "Database", make sure each one of the database is selected.