Black lesbians

I'm from Southern Africa and recently started consuming more media from the west and stumbled across some interesting topics like interracial dating and how there are racial disparities, I learnt that black women were less open to it and wondered if this affected same sex relationships as well . I haven't ever seen a black woman with a non black person, heterosexual or lesbian and wanted to ask black lesbians their reasons for preferring to date black women only. I know why black women don't date non black men but was curious as to why black lesbians don't like non black women