Can this work? If so, what does it bring?

https://www.dx.com/de/p/exp-gdc-laptop-external-independent-video-card-dock-with-pci-e-interface-black-2058183?tc=EUR&ta=DE

And now you should look at something?

I do not think so.

Seems to be an (outdated) cheap part of China, external graphics cards work well, but really makes sense only if your laptop has a Thunderbolt 3 port (and the docking station, of course, does not seem to be the case).

See, e.g. Also: https://www.chip.de/...78936.html

https://www.giga.de/...-maschine/