I'm usually pretty skeptical of all sorts of “miracle tools” for writing. But this time I was pleasantly surprised. I came across one site - I was just looking for a grammar checker, I didn't expect anything special. But in the end, I spent more time there than I had planned and came out with a neat, polished text and a feeling as if I had a personal editor in my arsenal. The first thing that caught my eye was the simplicity of the detail here
https://ahelp.com/sentence-generator/ . Everything works intuitively: you upload a text, press a button, and literally in a second you get a markup with suggestions on where and what can be improved. No complicated terms, everything is human. Errors are not just underlined, but explained: why so, how it is better and how it will help. Even if you're not a philologist, it's easy to understand what the point is.