I too have tried everything to connect my Fuji XT3 to my Mac. I have installed Fuji X Connect and I am using USB C . It now shows up in my photos as a device but says that there are no photos to download. I have Lightroom installed but that won’t recognise the photos on my camera either despite it showing as a device on the side bar Seriously frustrated with both Mac and Fuji right now and will probably resort to a memory card reader.