The Lord of the Rings

I think that The Lord of the Rings is a completely finished work, and if Tolkien were to write any more stories, it would be a "mini-add-on," an extra, call it what you will, but with the fall of Sauron, The Lord of the Rings ended. Perhaps that's why Tolkien refused to write another book; it wouldn't be able to be like the trilogy we all read.
By the way, I had a book from "Eksmo" with a translation by Muravyov, and the names in that book seem more familiar to me. But "Onty" – yes, that's definitely a mistake.