Google is getting increasingly difficult to give feedback to.
The location varies by product.
Google Sheets Under help, "Help Sheets Improve"
Google Docs Under help, "Help Docs Improve"
Calendar Circle question mark top right, "Send Feedback to Google"
Gmail Circle question mark top right, "Send feedback to Google"
I'm here just to say that this "loophole" is now being closed as of 1/6/21 according to Google:
Starting 1 June 2021, any newly created Google Docs, Sheets, Slides,
Drawings, Forms or Jamboard files will count toward storage. Existing
files will not count toward storage, unless they're modified on or
after 1 June.