I accidentally deleted an entire section from Microsoft forms

This is a pretty terminal flaw of MS Forms, I think.
Which of us has not typed something in e.g. Word, decided it was a bad idea, so simply closed the document without saving it?

Even nowadays, with documents being auto-saved, we can still revert to the previous version, because in something like OneDrive, there is a version history. 

But Microsoft Forms has no such capability. They specifically prevent users from returning to earlier versions of their form. A Cancel button, if you will. Even this forum has Cancel buttons on our posts!

Fatal. I'm very surprised that a product that forbids the abandonment of changes even made it into the marketplace. Use Forms at your peril!