A remote desktop is "a software or operating system feature that allows a personal computer's desktop environment to be run remotely on one system (usually a PC, but the concept applies equally to a server), while being displayed on a separate client device."
1-to-1 Assistance. The port forwarding is different for each router/modem and it is often difficult to get it to work with any of my hardware.
anyDesk. I got this one to work OOTB on newer hardware that was 64 bit. When I tried it between my 64 bit desktop and any of my older 32 bit laptops, the screens seem to freeze or at least were unresponsive. I considered it unusable for 32 bit older hw.
Remmina. GTK 3 app that can be installed with MX Package Installer from Debian Backports. Recommended that all plugins also be installed.
TeamViewer. "Establish incoming and outgoing remote desktop and computer-to-computer connections for real-time support or access to files, networks and programs. Collaborate online, participate in meetings, chat with other people or groups, and make video calls in one-click."
Download the deb (64 bit) from the website. Worked OOTB on 32 & 64 bit new and old hw. The screen response was slower from 64bit to older 32 bit hw but definitely usable.
VNC Viewer. Virtual Network Computing (VNC) allows one to view and operate the console of another computer remotely accross the network.