My absolute favourite Linux distro is Xubuntu. At the moment I’m on version 18.04.3 LTS. LTS is a short for Long Term Support and it is supported at least to april 2021. I installed 18.04 LTS on May 6, 2018 on my then brand new laptop and I haven’t been disappointed one second since.
My first Linux bistro was Red Hat version 7.1 back in 2001 but quite soon I moved to Slackware 8.1. I still run a server using Slackware 14.
In 2006 I moved to Ubuntu and in 2013 I moved to Xubuntu. Since 2013 Linux is the only operating system I use – no more Windows or macOS!
Xubuntu is an Ubuntu derivate using Xfce desktop environment. Xfce is known for being lightweight meaning you can using on older hardware. On newer hardware it makes Linux run like a charm.