Laptop as a 2 monitor with dvi?

I want to put on a 2 monitor only until I have it I wanted to ask how you can use the laptop as a second screen with a DVI cable

This is not possible at all, like laptops like PCs or consoles only ever have graphics outputs. Unless you are working with a capture card, but this is a different construction site.

The DVI socket of laptops is only used for sending, not for receiving signals. A transfer of the screen content to the laptop would be possible via USB. That would hardly make sense, e.g. Because of the power consumption. A used 17 inch monitor costs less than 40 euro. That would be more efficient.

Thank you