Hello, I recently bought a HDMI 2.0 adapter, with HDMI as Output and USB C as input.
Picture of my devices; https://i.imgur.com/VAcA0hF.jpg
When I put the adapter HDMI into my monitor, then put the USB C cable into it, and with USB C cable end, nothing happens at all. It usually works for other types of HDMI, just no picture coming here.
Do you know that the usb port is good on the laptop? Everything looks bent so you might have a non functional port.
Maybe list the model of the laptop and the adapter. I have found that some laptops annoyingly dont support video output on usbc and some that need bios setting changes to work properly.