It might be possible to recover the text of your notes. I cannot gaurantee this will work for you, but I've tried this in High Sierra and it worked for me. There might be an easier way, I'm not sure.
Using Finder or Terminal check in the following directory (Note - this may well be a different directory from the one you tried first)
for the following file
(In Finder, select
Go to Folder, enter
~/Library/ , then navigate to the dir shown above)
If this file exists, copy it to your Desktop. (Otherwise, sorry, game over, although someone else might know otherwise)
You will now need
mac_apt (macOS Artifact Parsing Tool) to analyse this file.
Download a compiled bundle of mac_apt for macOS from
I had to use the 10.13 bundle on High Sierra.
Using terminal, then cd into the mac_apt directory you have downloaded.
cd ~/Downloads/<name of mac_apt directory>
You should see the following two files:-
Now you need to run
mac_apt_singleplugin.app to analyse your Notes sql notes db
In terminal, run the following in the mac_apt download directory
./mac_apt_singleplugin.app/Contents/MacOS/mac_apt_singleplugin -i ~/Desktop/NoteStore.sqlite -o ~/Desktop/NotesOutput NOTES
This should create
Inside this directory will be a log .txt file, and if you are lucky, a
Notes.csv file. The csv file can be opened in any spreadsheet e.g. Numbers, and you can search through its fields to find the text of your notes if they were in the original file. You can copy / paste these into text files. Alternatively it might well be possible to run a script to pull out particular csv fields into individual text files - someone here may be able to help you with that particular problem.