Typical mistakes when writing a book

If the other day I was thinking of those readers who are also writers, today I do it again. I bring you a series of typical mistakes when writing a book Who else and who has ever committed the least? Do you agree with them? Would you put some more?

Let's list them:

1. Details and excessive adjectives is what is most abundant in many literary texts. Error! To make a pleasant, simple and enjoyable reading, you must put the precise details and not load the text in excess of them. These only get boring the reader and make him feel more and more lost in your reading.
2. You don't put yourself in the reader's shoes. When we write, we must do so thinking in addition to that we like ourselves, that our readers like it. Therefore, before starting, we recommend that you select the audience to which you want to direct your work (children, young people, readers of erotic novels, passionate about history, women, etc.) and think at all times, if what we are writing would like that selected audience. This will ensure that in case you self-publish it or it is published to you, you will be successful.
3. Don't leave open endings. Sometimes they are good, but the truth is that it is really "cruel" to write a really good novel that leaves us waiting until the end to find that it is open to the imagination of each one. These endings are not usually liked.
4. A poorly done dialogue. The dialogues between characters is what torments the writers the most. Many are too fictitious and unnatural; others, however, are too simple and have little consequence or effect on the rest of the book. When you do a dialogue, take time and read it as many times as necessary before continuing your book.
5. Expressions that we are sick of hearing. Many times we write taglines or expressions that we all hear and read on both sides. Do not use them, and if you do, let it be rarely. They tend to tire the reader.
6. Do not write an ending more than obvious from the first page of your reading. The endings that are sensed from the first pages of the book make the rest too boring because you leave nothing to the reader's imagination, and of these, unfortunately, they abound ...

I could put a few more, but I'm not going to be the typical pedantic writer (pedantic narrators are also usually quite tedious to read) and I leave you with these six. Do you think I'm wrong about them or do you agree on the contrary?