Eventually the Pico CMS app is what you’re looking for.
I’ve found “Forms” that seems easyest but is not clear for me if possible to insert html code/image/link/pdf etc…
Yes Pico seems very fine! But a bit complex for people used to using docs.google.com…
Don’t ask - test it. You can delete it without a problem, if you don’t like it. BTW, the standard text editor supports markups and allows to insert code and images too.
I’ve try to create a new form, inserting html code, the result is nothing short of terrible!
Here you can see the result.
Moreover, it cannot be changed once it has been created!
My opinion is that as long as there are applications like these, the user will never leave Google!
I hope that on future release, will add more functionality.