Try opening command prompt and running ipconfig /release then ipconfig /renew also try using a different ethernet cable if you can.

This isn’t really possible anyway. Also don’t be a creep

If local reinstall says you should empty space, you can do that. In winRE go to Advanced options. Then go to command prompt. In command prompt type notepad then once notepad opens click file > save as. A file explorer window should open. Go to your user directory C:/Users/your username and try to find / delete any large files or games you don’t need and try the local reinstall again.

You may want to hard reset your computer to make sure there is no monitoring software on it. He can also see connected ips and dns queries so use a vpn as well

Have you tried reinstalling windows?