[Gregol]

I also use Classic Editor. When I installed wordpress for the first time I get issue with gutenberg. Always when I tried to add new post I got a blank page. I didn't know why this was happening, so I installed it the Classic Editor. Classic Editor works perfectly.
Now I know it is a web browser issue. After clearing the browsing history, Gutenberg start working.
For me Gutenberg it is unintuitive and uncomfortable to use. It is not known where to look for what command. The Classic Editor is comfortable and easy to use. Additionally I use TinyMCE Advanced to add  new features.