larger iMovie issues

Hello, I created a video project on my iPhone and need to be able to get it to my Mac. It is a larger video (23 minutes long). It is too large to save to photos on my phone (without finding a bunch of storage space on my phone). When I save to a file and choose I Cloud Drive and the iMovie subfolder, it says it is already there but I don't see it in my I Cloud Drive when I look in Finder on my Mac. Help!!!!!!