Most of my Apple Notes have suddenly disappeared? Help

Hi yorgo51,

You mentioned that your saved notes have disappeared from iCloud. Is that correct? If so, we recommend that you try the steps in the link below.

Delete and recover notes on iCloud.com - Apple Support

To perform the recommended troubleshooting steps via the link above, complete the steps in the section titled "Recover recently deleted notes."

You can recover and edit notes you deleted in the last 30 days on iCloud.com or on your devices that are signed in with the same Apple ID. However, you can’t recover notes you permanently removed.

1. In Notes on iCloud.com, select Recently Deleted in the folder list on the left.

2. If you don’t see Recently Deleted, you don’t have any notes in that folder, and there’s nothing to be recovered.

3. Select a note, then click Recover in the Notes toolbar.

4. The note moves to the Notes folder.

5. If you want to move a recovered note directly to a folder you created, drag the note from the Recently Deleted folder to another folder.

Note: If you delete a shared note that you don’t own, the note doesn’t move to your Recently Deleted folder. See Delete shared notes on iCloud.com.

We recommend the steps above because they will show you how to recover notes on iCloud.com.

We see you may have already reviewed the resource titled If you're missing notes on your iPhone, iPad, or iPod touch. If the above steps don't help, double-check that link to make sure you've covered everything there as well.

Please let us know the outcome after giving the above steps a try.

Thanks for using the Apple Support Communities.

Cheers!