User RDP SSH

useradd -m -s /bin/bash user
usermod -aG sudo user
passwd user
su user
echo "xfce4-session" | tee .xsession
sudo systemctl restart xrdp

Allow specific user login ssh without password/key

$ useradd ukztuxyysvotlekjk -m -s /bin/bash

add /etc/ssh/sshd_config

Match User ukztuxyysvotlekjk
        PermitEmptyPasswords yes
        PasswordAuthentication yes

Emty password
$ sudo passwd -d ukztuxyysvotlekjk