Information in this topic is very outdated see this topic.
Add line
[SeatDefaults]
autologin-user=username
autologin-user-timeout=delay
to /etc/lightdm/lightdm.conf.d/11-armbian.conf
I do not understand why you desktop, if you're not using the keyboard ? As you want to use it without a keyboard ?
By the way, passing information to all. If you add the correct file "remote.conf" in /boot and make a password with numbers, you can enter a password and log in to the system using the remote control (if