There are 21 million Somali speakers (source: https://en.wikipedia.org/wiki/Somalis).
And there are 38 million native Oromo speakers (https://en.wikipedia.org/wiki/Oromo_people).
There are only 20 million native Amhara speakers
(https://en.wikipedia.org/wiki/Amharas). Because Amharic is the enforced national language in Ethiopia, many other ethnic groups speak Amharic in Ethiopia as a second language but only the Amhara people speak it as a first language.
Also, Arabic did not originate even partially in Africa. It originated in West Asia.
the number of Swahili speakers is estimated at approximately 100 millions. Amazigh (Berber) : 30 millions. Bambara : 15 millions. Wolof : 10 millions. they should appear.
And there are 38 million native Oromo speakers (https://en.wikipedia.org/wiki/Oromo_people).
There are only 20 million native Amhara speakers
(https://en.wikipedia.org/wiki/Amharas). Because Amharic is the enforced national language in Ethiopia, many other ethnic groups speak Amharic in Ethiopia as a second language but only the Amhara people speak it as a first language.
Also, Arabic did not originate even partially in Africa. It originated in West Asia.