Now make a video of what happens if you now re-boot using the power/Option (ALT) key ie can you see and boot from the USB ?
The bit you have shown other than creating the partition is not essential. As long as the partition is created and you have a valid USB with Windows on it, you should be able to shutdown then re-start/boot to the USB and continue the process ie you do not need bootcamp utility to do a re-start from the USB
I want to see a picture similar to this:
View attachment 637498
Here's a guide for doing it all manually
As you have tried a 1000x already you may wish/need to delete the previous windows partitions created see the guide for that too
and how is that ?
If you are trying to install on that external micro sd or usb card then it won't work.
The drivers for that just don't exist.
Internal partitions or external hard drive options only will work.
Microsoft only just recently allowed the installing of applications on external micro sd cards in native Windows 10. So attempting from what Apple offers as drivers will end in misery.
I think he/she thought you were trying to install on to the SD/USB card instead of your SSDwhat do you mean?