getting photos and videos from my iPhone to my MacBook Pro

so recently I went to a concert and I took lots of photos and videos and I'm trying to get them from my phone to my MacBook Pro and some of them have already transferred over automatically through the iCloud but not all of them and I'm not sure why. so I tired airdropping them from my phone to my MacBook and every time I do they don't download to my camera roll they just go to my download folder and I can't open any of the photos or videos it just gives me an error saying that the file cannot be opened because it is empty, I have no idea what that means and how to fix it please someone help.