Bad prompt response

I am growing very frustrated with my prompts not being accuratelt carried-out or "reading between the lines" and creating unwanted variations to my commands. Sometimes, I run dozens of interations, with prompt refinements. When I ask for a "Black man with an Afro," I get a white man with straight hair, for example.   And sometimes when I request a beautiful woman I get a highly muscular man with a beard or mustache, even when I put "do not show male faces, bodies or muscle definition" in the prompt. I'm having problems with distorted noses in humans.