Macbook Pro 2020 doesn't recognize second monitor while using usbc
Daisy-chaining monitors over USB-C is not supported on macOS. This is due to the fact that macOS does not support MST for monitor daisy-chaining, unlike for example Microsoft Windows. You will need to use Thunderbolt monitors in order to get display daisy-chaining working.
With your current hardware, you need to connect each monitor to its own port on the MacBook Pro - or get a Thunderbolt 3 dock that allows you to connect two monitors to the dock, and then the dock via one cable to the MacBook Pro.