A newfound bug in Google docs is causing it to crush and upon reopening it will crush again making it very difficult to re-access your document. The bug is manifested when a series of the same word is typed into a document and Show grammar suggestion is turned on.

How was it found
A Google Docs user, Pat Needham brought up the issue on Google Docs Editors Help forum.
"I've only tried in Google Chrome, with documents from three separate Google accounts (personal, G Suite Basic, and work one which might be enterprise). All three experience this same issue".
"It's case-sensitive. So trying with 'and. and. And. and. And.' doesn't cause it to crash."
While Needham publicly reported the bug, it appears that the issue was discovered by Eliza Callahan who was writing a poem novel for her novel using Google Docs.
Needham's findings have also been confirmed by other users running Firefox 99.0.1
Another user, Sergii Dymchenko, said strings like "But. But. But. But. But." triggered the same response. Some also noticed putting any of the terms like "Also, Therefore, And, Anyway, But, Who, Why, Besides, However," in the same format achieved the outcome.
A YCombinator HackerNews reader suspected the cause to be the "Show grammar suggestion" option in Google Docs.
A Google spokesperson confirmed the presence of the issue adding, "we're aware of this issue and the team is working on a fix."
How to recover your document
First thing first, turn off Show grammar suggestions so you do not run into issue by accident. In order to turn it off go to Tools and then into Spelling and grammar and untick Show grammar suggestions.
Now, if you already have a document that has been crushed, fear not because there is a workaround to access it. For some strange reason this bug does not manifest on Google Docs mobile app, so you can open the crushed document in the mobile app, delete words that have caused the bug and reopen the document on your desktop.
Until Google comes up with the solution this is currently the only way to address the issue.
Click on command prompt (admin)
Type in command prompt following:

Once File Explorer is up and running right-click on the hard drive you wish to run disk cleanup on and click on properties.
Properties Windows will open on the general tab, on that tab you have disk cleanup on the lower right part of properties, click on it.
Wait for Windows to gather information about your hard drive and files on it. After it is finished you will be greeted with the next screen:
Here you can thick and mark which items you would like to get rid of and which ones you would like to keep. Note that you can freely tick all of them and remove them since removing these files will not break WIndows in any way. make your choices and click on ok. You can also click on Clean up system files to run system files cleaner and get rid of junk there, you will not be able to choose any options there, Windows will alone clean up what is not needed.
After disk cleanup is finished least thing you will have is more free disk space, but like mentioned, keeping your Windows and computer healthy goes a long way in its usability, speed, and performance. 