I have been back and forth about this with one of my stories as well, because the MC is asexual, and while that is a significant subplot of the story, it’s not the main drive/plot of the story.
I have talked with a few friends, and I really wish they’d revamp the tagging of stories to make them easier to search (maybe pre-worded keywords) that way, readers can select keywords.
What I see in the LGBTQ+ genre is stories where the MC is exclusively LGBTQ+ (not choose your sexuality) so that LGBTQ+ readers can find these stories easier. If it is only stories that center around sexuality itself, I’m afraid there won’t be a good quantity of stories to fill the genre, and it will be a lot of “coming out” stories. I would enjoy reading more stories, similar to the Queer contest, where it shows LGBTQ+ members in their every day lives, and even perfectly comfortable with their sexuality.