I don't think that works. It obviously depends very much where you live and what industry you work in. For me, it is East London and nursing & care work & universities. I couldn't possibly arrange to be in the company of people of my own race most of the time.
Not to mention that wanting to arrange things so you are only among members of your own race is generally limited to ethno-nationalists & minorities who resist assimilation. Both are usually low-status and distrusted by the general population.