how can I download an older version of iMovie
So recently, I opened up my wife's iMovie library (which is on an external HD) on my computer. I didn't realize that her version of iMovie was 10.1.1 on High Sierra. My version is 10.1.12 on Mojave. Now she cannot open her library on her machine because my machine saved her library in the new version.
We updated her OS to Mojave so that we could update her iMovie to 10.1.12, but the only version of iMovie that we can find on the app store is 10.2.2 which require OSX Catalina.
We CANNOT update to Catalina as we have versions of software that we use for work that is not supported past Mojave.
How can I get previous versions of iMovie (specifically 10.1.12) to show up in the app store?
MacBook Pro 15″, OS X 10.11