And how can re install it😞
Can you please send me link
Bro I still can't find my answer, I am new to Linux please help me
No bro but I am in hurry to do some assignment so..
Ok I will do it by my self
I tried this command
"sudo apt install zorin-os-desktop gnome gnome-shell gdm3"
but dose not work
I tried this command
"sudo apt install zorin-os-desktop gnome gnome-shell gdm3"
but dose not work
Well look...A little bit of searching helps, doesn't it?
But it did not solve your problem? Hmmm.... Did you reboot after reinstalling? Can you post a screenshot of what you are seeing now?
For temporarily I installed xfce
But I want my gnome back
I tried lot but no command worked
Did you just install xfce or did you install xfce and you also removed zorin desktop (gnome)? If you used sudo apt install zorin-os-desktop gnome gnome-shell gdm3 then you should get an option to change the session to Zorin Desktop in the login screen.
Firstly I removed gnome (inbuilt default DE)
And then I tried lot to install gnome again via tty but it's not installed
So for temporary I installed xfce
What about this? Did you try logging out and changing session?
But there is no gnome so how can I change
You want to say first try this command and then change desktop
Fixed grammatical errors in the title.
There is no word called 'mistakenly'.
Sorry?
You said you tried installing Zorin desktop using the command:
sudo apt install zorin-os-desktop gnome gnome-shell gdm3
So, when you reboot/log out, do you get an option to change the session to Zorin desktop by pressing the gear icon in the bottom right corner of the login screen?
didi you see this 
Got it!
But why are you using the tty? You can use the terminal in xfce.
Anyway, it looks like you have broken packages.
Try using this command:
sudo dpkg --configure -a