secondmonitorhelp

Hello everyone! Is there any way to set the default download/save location in Windows to the secondary monitor, without setting it as primary in the display settings? I wish stuff I download or save in programs would be placed on the second monitor desktop, so I wouldn't have to constantly...

The second display I am trying to use is a TV but it won't connect to PC. I did not buy Windows 10, transferred from USB. I am using a working HDMI. Drivers are up to date. In Display settings I cannot detect it and with Windows Key + P it is on "PC screen only" but none of the other options...