Mate files on Unity, got much worse

[Grizzly]

Hi All

More on Mate files

I have 23.10 Unity, I run 

$ sudo apt update -y && sudo apt full=upgrade -y &&
sudo apt autoremove -y && sudo apt autoclean -y

last night I added 

$ shutdown now -P

as I watched the terminal I noticed a lot (20+) Mate files (see last post) but 
thought only a little about itm but did ask the question, if it was normal

fast forward to this morning, system booted into Unity, but no dash/launcher or 

panel, cant get the usual terminal (Ctrl+Alt+T) but did get (Ctrl+Alt+F2) 
terminal, run

$ dconf reset -f /org/compiz/
$ sudo service lightdm restart

which gave me a logon screen (I usualy auto logon as there are no options) with 

Mate DE as a choice, that did give me a bare Mate desktop

How do I get back to my Unity desktop and get rid of Mate, and more how do I 
stop updating from getting Mate (or other DE's) files that I don't want or ask 
for