Hi, good day! I'm John Dev a Windows user like you and I'll be happy to assist you today. I know this has been difficult for you, Rest assured, I'm going to do my best to help you.
Can you give me more details on what happened to your computer? When was the last time it worked properly?
It's not ideal to download Windows with the phone and it's more likely to load or fail. It is best to find another working computer and a USB flash drive to create USB Installation media to repair or reinstall Windows on your device.
Kindly let me know if you have any further concerns.
Kind regards,
John DeV
Independent Advisor