How to restore default Unity [duplicate]

I was messing around with Compiz Settings Manager and result of that is that I cant see my panel bar, cant use alt+tab or start button. Is there a way to restore default Ubuntu environment? I will be grateful for your help

In terminal, type in sudo apt-get install --reinstall ubuntu-desktop to completely reinstall back to defaults.

To remove all compiz settings type rm -rf ~/.compiz-1 ~/.config/compiz-1 in terminal, then logout and back in.

Or you can install "Unity Tweak Tool" and set the default settings. Open a terminal and type:

sudo apt update
sudo apt install unity-tweak-tool