Howdy Selfhosters!

A family member who does not live in my state recently got a new PC, and asked for my help in setting it up. Since it can't be done in person, I'll have to do this over the phone. Problem is, I don't really want to walk them through all of the steps (download Firefox, ublock origin, uninstall W11 bloat, etc) over the phone. I was hoping there exists a software that I could host on my Linux machine (I am able to port forward/host externally if necessary), and instruct them over the phone to download the "other end" (client-side) of the software so that I can remote in and set their PC up myself.

I checked out the awesome-selfhosted list and found that most of the remote access softwares are mainly for SSH servers. I did check out Guacamole, but I'm not sure I understand how to utilize the software. Any help and suggestions are welcome. Thank you everyone!