I cannot find a missing file in Notes.

Hello LostinUsa,

The page you came from, If you're missing notes on your iPhone, iPad, or iPod touch - Apple Support, has the best steps available for locating lost Notes files.

In additional to those steps, these steps may also help find the notes:

1. Power cycle the iPhone using these instructions: Restart your iPhone - Apple Support While simple, this can refresh the iOS, apps and connections.
2. Confirm the iPhone is connected to either cellular data or a Wi-Fi network.
3. Is the notes are stored on a third party service, such as Gmail, sign into the web portal and see if the notes are stored there.
4. If the notes were stored in iCloud, reach out to Apple Support for further assistance: Get Support

Have a good day.