You can upload an iMovie video to YouTube, directly from iMovie on your Mac computer. This is great if you want to post something quickly.
You can wirelessly transfer videos from your iPhone's Photos app to your Mac computer using AirDrop or iCloud.
This is my simple way to move photos from my iPhone to a Windows computer using the Photos app. I plug in my iPhone with a USB-C cable, tap "Allow" on my phone, and then do the rest on my PC. I open ...