Where apps hide your files
AirDrop has one rule and two exceptions, and the exceptions cause all the confusion.
Files AirDropped to a Mac land in Downloads. Sort by Date Added and the transfer just received is at the top.
Depending on settings and type, received items can route into the matching app rather than sitting as a file — photos may offer to open in Photos, contacts into Contacts, links into Safari. The dialog at arrival decides; Accept with a choice of app appears for some types.
If a photo "disappeared", check Photos' Imports before hunting the disk — an accepted-into- Photos image is in the library, not in Downloads.
If Desktop & Documents syncing rearranged your folders, or Safari's download location was changed, "Downloads" may not be the folder in your Dock. Confirm the real one:
Finder → Go → Downloads (⌥⌘L) goes to the actual folder regardless of what the Dock stack points at.
find ~/Downloads -mmin -10
find ~ -mmin -10 -not -path "*/Library/*" 2>/dev/null
The second version catches the case where it landed somewhere unexpected.
Both devices must have AirDrop receiving on (Control Centre → AirDrop → Everyone for 10 Minutes is the reliable setting when it is being stubborn), and large transfers cancelled mid-way leave nothing behind — there is no partial file to find.
Right-click any file → Share → AirDrop, or drag onto a person in a Finder window's AirDrop view (⇧⌘R). Search-then-share beats navigating first: find the file wherever it is, share directly from the result.
Downloads, unless the type was accepted into an app such as Photos.
It was likely accepted into Photos — check the library's recent imports.
Everywhere keeps track of every file on your Mac — including the folders Spotlight hides and drives you have unplugged. Free for a day, then $19 once.
Download for Mac