RLFontan
If i try to install through the Software Center and to enter through lightdm, it just give me a black screen not working GNOME desktop.
You need to run it from the CLI. And you say "enter through lightdm" which very much makes it sound like you didn't actually uninstall it, otherwise you would be hitting GDM instead. LightDM does not work with GNOME Shell, you have to use GDM.
Also be sure to install gnome-desktop-branding-material, I'll be updating the doc tomorrow to recommend that over gnome-desktop-branding