> I will show you this black screen

Right, that's why I said RDP isn't pretty if you aren't on Linux. Windows insists on creating a separate desktop for each session. IIRC it has something to do with licensing, they don't like simultaneous users using one Windows license.

> While on Windows you can just install TightVNC and it works.

If you're resorting to installing third-party apps, you can install TightVNC on Linux too, and it just works. Though I found krfb performs better on my network, ymmv.

> And RDP also assumes that you are running X11 and not Wayland.

RDP is just a protocol that describes the bytes going over the network. Why would it care about your display server? There are VNC and RDP servers for both X11 and Wayland. Just install one that's supported by your system.

Though if you're on linux, you don't have to deal with the VNC/RDP jank at all. Just use ssh -X or waypipe and it's way snappier.