Don't download any "iLife 13.dmg" from third-party sites. It doesn't exist legitimately, and it could harm your computer. Stick to the App Store or Apple's official support pages for older software.
. However, if you've been searching for a single "suite" installer, you likely noticed it's harder to find than previous versions like iLife '09 or '11. Here is the breakdown of what happened to and how you can actually get these tools today. 1. Why You Can’t Find a Single "iLife '13" DMG Ilife 13 Download Full Dmg
There is no official "iLife '13" software package. Apple discontinued the numbered iLife suite after Don't download any "iLife 13