I have read all of this thoroughly, and a few other threads, though this seems the most promising. I'm not adept with tech so a thorough read doesn't mean I didn't miss the answer - so potential apologies in advance.
In the course of trying to upgrade to Big Sur my machine crashed and I had to do a clean install. Luckily I had Time Machined immediately before my attempt.
When I completed re-setting my system, I logged on to Evernote, which I've been using since around 2010 I believe, and discovered that a large number of "recent" notes were "missing." Most were not, so I assume this means that at some point EN stopped syncing files and storing them on their servers, or I opted out of a paid membership or something, I have no recollection.
I would very much like these recent notes, so attempted to follow the "recent" directions above: however in my Time Machine backup the folders listed above don't exist. I checked thoroughly under Library/Application Support and Library/Containers and Library/GroupContainers, in both the main system library AND user/<username>/Library.
I appreciate I may be missing something simple here, but if anyone can help me find the data for the notes I had on my machine under Catalina last week, backed up on my TM drive, I would be deeply grateful.
Thanks.