: Click on the App Store icon in your Dock or press Command + Space to open Spotlight, type "App Store," and press Enter.
Click the Cloud icon . A pop-up should appear asking if you want to "Download an older version of iMovie" that is compatible with your current macOS. Confirm: Click Download to proceed. Need older version of iMovie - Apple Support Community Imovie 10.3.3 Download
: Fixed issues where certain transitions or titles might not appear correctly when exporting (sharing) finished projects. : Click on the App Store icon in
Downloading iMovie 10.3.3 typically requires a specific combination of hardware and software, as newer versions on the Mac App Store often demand the latest macOS. This version was released on May 19, 2022, primarily to support importing Magic Movie and Storyboard projects from iMovie for iOS 3.0. Apple Support Community System Requirements for iMovie 10.3.3 Operating System : Generally requires macOS 11.5.1 Big Sur Confirm: Click Download to proceed
Version 10.3.3 was part of a series of updates focused on stability and integration with new Apple hardware and formats. iMovie - App Store - Apple