Desktop without cable by default transferred to the screen?

Fa
1

I would like to have the mobility of a laptop, but the price / performance ratio of a PC.

Now I know that Google Chromecast Desktop makes cable-less transmission possible, but not without having previously used a commonly-connected monitor to start the feature.

Is it also possible to stream the graphics card output standard to a Google chromecast stick?

In this way I could use a portable monitor in combination with wireless keyboard + mouse very mobile inside the apartment.

oy

Maybe read here:
https://www.giga.de/...-so-gehts/

Sorry, I assumed a TV.