How to install Windows 10 on MacBook Pro A1425 running Catalina?

Hi folks,

• The lady of the house has recently given me a MacBook pro A1425
• The MacBook was given a reset to factory defaults, meaning I was starting with a clean laptop
• Thanks to wonderful assistance given to me elsewhere on this forum (thanks again to all who helped with that), I've upgraded the OS to Catalina
• Previously this MacBook was running dual boot to Windows
• I have attempted to install Windows 10 using Boot Camp but repeatedly get the same error:

Your Bootable USB drive could not be created

An error occurred while formatting the disk.

• I've looked around for a solution
• Many on the internet refer to the USB stick formatting and capacity
• I've tried 2 different USB sticks (1 with 32 GB & 1 with 64 GB capacity)
• I've tried formatting the USB sticks as each of FAT32, exFAT & NTFS
• I've also tried a different USB port on the MacBook
• None of this has made a difference
• I've taken up only a 230 MB of space on the MacBook disk since I've started using it (and emptied the MacBook Bin to clear the files downloaded to upgrade the OS)
• Hence I don't believe there is a capacity constraint at play from the disk in the MacBook
• Can anyone please recommend a constructive way for me to take this forward?

Thanks for any help.