How use usb c with my MacBook Air M1?

It looks like it should work, but to be honest, I don’t understand why it isn’t. Do you have any other USB-C devices to test it with? There are three possibilities: It is broken, or it just for whatever reason doesn’t work with your computer, or that a macOS reinstall could potentially fix things.

Are you running the latest version of macOS? (Apple Menu > About This Mac)

First, a description of what is "not working" and what is would be very helpful in solving your problem since plugging in the hub by itself does nothing.

Hello, well firstly, could you send me a link to this ‘Ugreen USB-C’ you talk about, Ugreen make many products with USB-C ports so this isn’t particularly specific.