Retrieve lost doc

Yesterday I spent 5 hours writing a document. I highlighted the whole document in order to reduce the size of the font.How to set back the date and time on computer in order to retrieve a document that was lost?Dell cpu Librewrite . Yesterday I spent 5 hours writing a document. I highlighted the whole document in order to reduce the size of the font
and when I did the document disappeared. I have tried doing many undos, following the directions for finding a lost document by google and I have been unsuccessful. I set the computer back to the time that I wrote the document which was from 12 to 5 9/7 to when it disappeared at 5:00 pm 9/7. BTW I saved numerous times while composing . Is there a way to search a history of saves? techi’s can u help? I am totally stressed! Joy Inventor1@protonmail.com

Your frustration over so much lost work is understandable.
This is a typical rookie mistake.
Your information on how and why your document was lost is very vague.
Only by marking a text, it does not disappear, at most you then press the Delete button.
After that, you would have to save your document blank to get the effect you mentioned.
Resetting the computer to a time in the past will never help you retrieve lost documents.

What you can do:

  1. Look in your trash can to see if the document is still there.

  2. Contact a professional data recovery company.

Otherwise, you’ll probably have to accept that your data is lost.
So in the future you can remember to regularly save your documents and make backup copies.

I wish you success!