Something that surprises me is that no one mentioned just running debian 12 with lxde.
Though, I don’t reccomend using the netinstall, as the user created there won’t be part of the sudo group. You should use the live iso.
Lubuntu is based on Ubuntu, which is based on Debian. It meets all of your requirements, and has never crashed on me in my 2.5 years of using it, except when running kde, but that’s probably kde’s fault.
If you don’t trust my link (fair enough, don’t click links from strangers), the iso can be downloaded by going to debian.org, clicking “other downloads” under the big “download” button, locating the live isos, in the “Try Debian live before installing” clicking “other live iso”, and finding the lxde iso.
Something that surprises me is that no one mentioned just running debian 12 with lxde. Though, I don’t reccomend using the netinstall, as the user created there won’t be part of the sudo group. You should use the live iso.
Lubuntu is based on Ubuntu, which is based on Debian. It meets all of your requirements, and has never crashed on me in my 2.5 years of using it, except when running kde, but that’s probably kde’s fault.
https://cdimage.debian.org/debian-cd/current-live/amd64/iso-hybrid/debian-live-12.9.0-amd64-lxde.iso
If you don’t trust my link (fair enough, don’t click links from strangers), the iso can be downloaded by going to debian.org, clicking “other downloads” under the big “download” button, locating the live isos, in the “Try Debian live before installing” clicking “other live iso”, and finding the lxde iso.