How to Disable WordPress Block Editor?

> You can completely disable the block editor by going to your WP-Admin main page.
> The notice saying Try Gutenberg also has a button to switch back to the classic editor.
> Then the classic editor will open automatically again when you start a new post or edit an existing one.
> If you’ve dismissed that notice, click on Screen Options at the top of the page, and tick the box that says “New Editor”. That will bring back the notice block.