You can send you work directly to publishers. It is important to make it clear what category you work is in, even more specific than you did here, why you are sending it to them - knowledge of the publisher and what the publisher has published give them a tad more confidence you are sending it to the right place - explain why you are a good bet as a potential member of their team, describe the target audience specifically, and read everything they say about submissions carefully.
If you haven’t let others read your work and give you feedback do that. You can send you work to agents who, if they like it, will then market it for you. The process is similar to the above.
To increase your chances (and this can also be done in parallel) get shorter works published online published magazines. Get ready for rejections. It might 20-30 rejections to get something published. Start with sort of known outlets and outlets that really fit whatever you are submitting.
Any publications…put them in your submission letter with your book.
Ask editors for feedback and if they give you any feedback, thank them, even negative feedback - I mean, unless they are rude and mean. But constructive negative feedback can be a gift and it means they spent time on it, time they don’t really have so perhaps they liked something about your work.
Query letters to any of the above outlets can work. There are books that come out each year and go through all the major publishers, often including tips from the people that screen potential books and articles. I don’t know if there are braille versions and pardon my ignorance of current tech, but it seems to me there should be something that one can run over the pages of a non-braille book that puts it into words. If my fastasies are correct get help from a bookstore for what book would fit your genre(s) best.
Publishing essays, opinion pieces, blog entries, fiction or non-fiction on any topic will also give the screeners more confidence in your work and they will be more likely to read it and more likely to read it optimistically.
If you have a writer you love in your genre, you could write to her, say, and tell her you love her work and why and then ask if you could do a short interview or ask her a few questions about what you should do. Be concise and don’t assume anything until she greenlights it. She might even get curious and ask to read a bit of your writing. Unlikely, but this is a getting used to rejection or disinterest process. Thank everything, but of course no need to grovel.
Sometimes publisher will say don’t send us anything for a year. Send them something a year later.
That’s some off the top of my head thoughts. The books I mentioned will also have advice and usually sections written about all this from the perspective of editors.
Stiff upper lip, patience, relentlessness, getting feedback anywhere you can.
Good luck.