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.
It looks like the HDMI is output only so it will only work at the origin of the video signal, meaning your laptop.
You’ll probably need a USB-C dock of some sort to connect your monitor.