Why can't I connect via RDP to the virtualbox virtual machine?

Question

virtual box

There is a server on the local network on Debian 10 (without guys) ip 192.168.10 Virtualbox
is installed on it
. The guest system is also running with Debian 10, but not installed yet. I want to hook into rdp to install.

netstat -atu
tcp        0      0 localhost:33891         0.0.0.0:*               L

$ VBoxManage showvminfo
NIC 1:                       MAC: 
, Attachment: Bridged Interface 'eno1', Cable connected: on, Trace: off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0, Promisc Policy: deny, Bandwidth group: none
Session name:                headless
Video mode:                  640x480x24 at 0,0 enabled
VRDE:                        enabled (Address 127.0.0.1, Ports 33891, MultiConn: off, ReuseSingleConn: off, Authentication type: null)
VRDE port:                   33891
Video redirection:           enabled (Quality 95%)
VRDE property               : TCP/Ports  = "33891"
VRDE property               : TCP/Address = "127.0.0.1"
VRDE property               : VideoChannel/Enabled = "true"
VRDE property               : VideoChannel/Quality = "95%"
VRDE property               : VideoChannel/DownscaleProtection = <not set>
VRDE property               : Client/DisableDisplay = <not set>
VRDE property               : Client/DisableInput = <not set>
VRDE property               : Client/DisableAudio = <not set>
VRDE property               : Client/DisableUSB = <not set>
VRDE property               : Client/DisableClipboard = <not set>
VRDE property               : Client/DisableUpstreamAudio = <not set>VRDE property               : Client/DisableRDPDR = <not set>
VRDE property               : H3DRedirect/Enabled = <not set>
VRDE property               : Security/Method = <not set>
VRDE property               : Security/ServerCertificate = <not set>
VRDE property               : Security/ServerPrivateKey = <not set>
VRDE property               : Security/CACertificate = <not set>
VRDE property               : Audio/RateCorrectionMode = <not set>
VRDE property               : Audio/LogPath = <not set>

on RDP neither from Windows nor from KDE does not cling

VBoxManage list extpacks                               Extension Packs: 1                                                   Pack no. 0:   Oracle VM VirtualBox Extension Pack
Version:      6.1.14
Revision:     140239
Edition:      
Description:  Oracle Cloud Infrastructure integration, USB 2.0 and USB 3.0 Host Controller, Host Webcam, VirtualBox RDP, PXE ROM, Disk Encryption, NVMe.
VRDE Module:  VBoxVRDP
Usable:       true 
Why unusable:

Answer 1

Earlier they wrote that it is possible due to the lack of a graphical shell on the server...

Answer 2

phpvirtualbox
after installation use VRDE
otherwise probably vagrant