on Just Publishing Advice:

If you are a new author, you have plenty of choices of free self-publishing companies to publish your book.
It is very easy to publish an ebook today and make it available to the world.
You can also publish a paperback book using print-on-demand services.
There’s nothing to stop you from publishing your new book, and yes, you can do it for free.
In This Article15 Free self-publishing companies, you can choose
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The best choices for ebooks
.1. Amazon Kindle Direct Publishing (KDP)
2. Apple Books
3. Barnes & Noble Press
4. Kobo Writing Life
5. StreetLib
6. Xinxii
7. PublishDrive.
Ebook aggregators.
8. Draft2Digital
9. Smashwords.
Free paperback self-publishing
10. Amazon KDP
11. Blurb
12. IngramSpark
13. BookBaby
14. Lulu
15. Barnes & Noble Press.
Conclusion