All the people in my writing club are old white people, and they all give out some of their work to be critiqued. Should I share my dark, grim, and intelectual stories as well as poems in the writing club?

Definitely. I’m not sure what the others are writing that you’re concerned that your dark, grim, and intellectual stories would be a concern.

We have a younger person in our group who writes similar stories and poems to yours, at least in tone, and they do read and submit their stories and poems.

Some of the old white people write stories I don’t particularly care for on occasion, but I critique them as I do any other story. Even if I don’t like it, is it good, what are the good parts, and what could be improved upon?

At the same time, you have to take all critiques with a grain of salt. I have a character with ochre yellow irises and hair, and one critique was that they should be made a prettier color. I’d picked that color specifically because it was unusual and not very pretty. She was supposed to be striking in appearance but not beautiful. I ignored that criticism, and also some about her awkward personality, as she is supposed to be socially inept and inappropriate at times.