How do I create windows 10 bootable USB on Mac without bootcamp?

Yrturo 

If you want to create Windows 10 bootable USB on Mac, the manual method of copying the ISO file is very simple. Basically, just copy the contents of the Windows ISO file directly to the USB drive. This method is suitable for people who are not familiar with command line operations. I have used this method before and it is very intuitive. The specific steps are as follows:

1. Format the USB drive:

First, insert the USB drive and open Disk Utility.

2. Format the USB drive as ExFAT or MS-DOS (FAT) format, and select Master Boot Record (MBR) as the partition scheme. This is to ensure that the USB drive can be recognized normally on Windows.

3. Open the ISO file:

Double-click the Windows 10 ISO file, and macOS will automatically mount it as a virtual disc, similar to opening a normal folder.

4. Copy the contents to the USB drive:

Open the mounted ISO file, select all the files in it, and then drag or copy and paste them to the USB drive you just formatted. It's just like copying files on your computer. There is nothing complicated.

Done:

After the copying process is completed, your USB drive is ready to install Windows 10 directly.
This method is very suitable for those who don't want to toss the command line tool. It is completely a graphical interface operation, just like in a folder.