Achie, it is worth listening to your feelings, in particular as you have documented that you wear your black items less and less.
I can't tell you exactly what to do, but I can tell you about what I have done, and this might give you a little inspiration. For many years, I, too, had black as my only dark neutral. As my hair turned gray, I gradually replaced many black items with grey ones--ranging from silver and light greys to medium greys and charcoal. The greys look harmonious with my present colouring and are easy to combine with all the the cool colours in the rest of my wardrobe. Later, I have also felt drawn to, and have included, items in deep blues--however, not the almost black ones--and they kind of echo my blue eyes. Lately, I have also become interested in adding a certain COOL medium brown, which looks harmonious with my skin.
I still like and wear some black items, in particular in winter. However, in general, I don't wear black in large amounts near my face, and I always combine black with one of my best/signature colours (blue-ish pink, blue-red, purple, blue, torquoise, white, grey).
Do you consider yourself to be cool or warm? You have brown eyes, don't you? Could one or more browns--cool or warm--be an option? Or taupe--either grey-ish or brown-ish?
Please be aware that you might no longer NEED a very dark neutral. As our hair turns from dark to grey, we are no longer high contrast, but become medium or low contrast. Imogen Lamport at the Inside Out Style blog has written several useful posts on how to dress for your ideal value. I don't know if you are familiar with this concept, but if you are interested in reading about it, here is a link: https://insideoutstyleblog.com.....value.html