I've been using MX Linux (from memory: version 21, Debian 11 xfce) happily for a relatively long time, with no particular issues to note.
And today, following a reboot (which I can do from time to time without problem), it's the drama! panic, horror


instead of finding myself on my usual desktop, I find myself facing a desktop that "seems" to resemble the original desktop, and the applications or scripts that normally load at boot are not launched.
Since my last reboot (about 3-4 days ago) I haven't done anything "special".
I remember:
> 2 updates, which I would say "classic".
> removing the "Flacpak" package
The rest being "standard" work
I have some knowledge of Linux but mainly on servers, but when it comes to GUI environments I can say I'm a nobs, which is why since I made my GUI a long time ago at the small onions, I don't touch them anymore, too afraid to "break" everything.
In short, it's a bit of a panic, because this machine is a key point in my network.
For information:
- currently I am cloning the disk of the system partition (still my 1st reflex)
- I have regular backups via "Timeshift" (2 per day, and 2 per week) on the second HDD, however I've never needed to use it for restoration, I don't know for the moment how it works.
Before touching anything, I come to ask you for advice and help.
-> Of course, how to recover my classic install
-> are there things to do or not to do
-> and for later: understand what happened, because suddenly, I will have stress at each reboot

Here, hoping that you can help me and / or advise me, because frankly I can not see myself starting from zero, after all these months of configuration

thank you very much in advance
AD