Debian + KDE and then install synaptic and your basically there man. https://itsfoss.com/synaptic-package-manager/ You could go with Ubuntu but it has telemitry bullshit (if you don't care then its fine). Ubuntu is just the commercialized linux that is based on Debian, basically the same thing but with the Ubuntu store and settings on top of Debian. Launch Synaptic once a month and refresh and apply updates or add the software from the repositry from there. Debian is all about being stable so it wont have all the latest versions of software but if you want a Windows XP version of Linux that just fucking works, Debian is the way to go. Everything has a .deb installer if it is trying to be available to the wider Linux user market.