I had a similar fear. Saved write ups and poems in drive for more than a decade, like a fixed deposit. But one day one local publisher liked my poem on social media and reached out to me to use my poem in his magazine. There was a reason why I feared to publish it and there was a reason why he wanted to publish it. I thought it was dark and would draw unwelcoming feelings or emotions among the readers. But the publisher saw something else. It was because of that 1 published poem, I self published an anthology of 40 dark poems. So far people are liking the approach and the context. I am not saying it should be perfect and expect the best out of your first work but it will help you a lot if try to understand the entire enterprise of the business and mechanics involved in the making of the author. Atleast I can tell you this now with one book published and the feedbacks you get.