All of my notes are gone

I opened my notes app yesterday, and found that a super important thread had just vanished.

I’ve tried everything that I researched online:

Theres no “Recently Deleted” folder, just a blank note with no title.

My phone is up to date.

I restarted my phone.

I thought maybe there wasn’t enough storage, so I freed some up and still nothing.

I checked iCloud because I had the Notes app synced, and there’s nothing there either.

It’s not on my iPad or MacBook either.

Would Apple Support be able to restore it?