Problem connecting 2 monitors to my laptop

Hi guys, for my laptop ASUS VivoBook with Windows 11, I purchased two MSI monitors.

I'm having trouble extending the display to both of them. Only one monitor works. Here my setup:

Monitor 1: direct HDMI cable. Connection is made via an HDMI cable from Monitor 1 to my laptop

Monitor 2: since no more HDMI entries are available, I'm using an HDMI to USB adapter. This officially supports Windows 11.

When I identity the monitors, only the one directly linked is correclty available. The other one is off.

To troubleshoot monitors and setup, I switch monitors and connection with all possible combinations: no matter what, only one monitor, that one which is correctly linked is available.

Do you have any ideas