Yes.

And to expand on it a little bit more, African tribes in the 17th and 18th century hated each other. Typically, one African tribe would capture members of another and then sell them to European slave traders if they didn’t use them for slaves themsleves. That’s partly how African slaves became more popular than any other ethnic group becoming slaves around that time.

Historically, farther back in BCE, (I can’t confirm an exact time frame, but I know this happened for centuries) jews and other Hebrew ethnic groups were very popular in Northern Africa for slaves. That’s how we have the pyramids today. This is (partly) mentioned in the Bible, however, there are other third party secular sources that have confirmed this as true.

And lastly, while technically African, white south Africans during the British empire also owned slaves and apartheid was very popular until the 1990s because of this as well.

Due to all this, one could argue that Africans invented slavery and spread the practice worldwide, however I’m not a scholar so I’m sure a history professor at a university could explain the nuances of my answer in detail and add corrections as needed.