After that, you can burn the macOS dmg to USB to make it bootable for installation. Fortunately, there are a few good websites that host the direct download link of macOS Catalina DMG.
However, it is not easy to find the direct download link because Apple wants you to upgrade from Mac App Store. You can unpack the DMG file and make a bootable Catalina installer USB, which can be used to install macOS on other computers. Many people prefer the direct download link of macOS Catalina as it is more flexible. Get MacOS Catalina DMG Via Direct Download Link Download Install DMG from macOS Catalina Patcher
Download macos Catalina Installer from Mac App Store
