Desktop pc won't boot into de after update

Please do not forget to tell the people here, that in the other thread, before this one:

Unable to boot after latest update - #68 by Nachlese

you did disable the display manager (lightdm).

We did this so that you could boot at least to TTY mode.

So as of now, lightdm isn’t getting started, which was intentionally done and is not an error at this point.

You are at a TTY only because you would get a black screen with the display manager active.

Your system in the current state - with display manager disabled - cannot and will not boot into any desktop.

you should be able to run
startx
after login though, to start your cinnamon session