Install directvnc by entering the following commands in the terminal:
sudo apt update sudo apt install directvnc
VNC client using the framebuffer as display
DirectVNC is a client implementing the remote framebuffer protocol (rfb) which is used by VNC servers. If a VNC server is running on a machine you can connect to it using this client and have the contents of its display shown on your screen. Keyboard and mouse events are sent to the server, so you can basically control a VNC server remotely.