I installed a windows installer on my windows 10 on a usb and then when I put it in my Mac and restart it with the option key I get presented with three disks. My Mac, My recovery and the windows installer usb. However when I want to boot into it the screen freezes and the only option I have is to restart my Mac. I will add the tutorial I have been following in the comments below if it helps. And I don’t know if it affects or anything but my Mac is patched with a high Sierra patcher. Please if anyone can just drop an answer below it would be a miracle.