Apple still provides older macOS versions to users who have previously "purchased" them (free) via the App Store.
On a real Mac: Open the App Store.
Search for macOS Mojave. If you have downloaded it before, it will appear in your Purchased tab. Macos Mojave 10.14 4 Iso Download
Click "Download." You will receive Install macOS Mojave.app (approx 6.0 GB).
Convert to ISO yourself (Best Method):
Open Terminal and run the following sequence:
# Create a blank DMG (6.5 GB)
hdiutil create -o /tmp/Mojave -size 6500m -volname Mojave -layout SPUD -fs HFS+J
This is the critical part of the review. Since Apple does not provide this file, you are likely downloading a "repackaged" version created by a third party. Apple still provides older macOS versions to users
Before you search for a direct download link, you must understand the file formats. Apple does not officially distribute macOS as an ISO file. Instead, Apple provides the Mojave installer as an .app bundle (downloaded via the App Store) or a .dmg disk image.
So, what is an ISO?
An ISO is a disk image format standard for optical discs. In the context of macOS virtualization, users need an ISO file to boot the installer on non-Apple hardware (Windows/Linux) or in virtual machines. On a real Mac: Open the App Store
Why 10.14.4 specifically?
Version 10.14.4 (Build 18E226) was a landmark update. It introduced support for the 2018 MacBook Air’s True Tone, expanded AirPlay 2 for third-party TVs, and fixed critical kernel panics found in 10.14.0. For stability in a VM or on older hardware, 10.14.4 is considered the "golden build" of the Mojave cycle.