ifconfig eth0 up doesn't work [closed]

I changed the mac address with macchanger with this command:

ifconfig eth0 downmacchanger -r ethoifconfig eth0 up

And this should work for restart the network , but it doesn't, so I typed :service network-manager restart

And still doesn't work... I don't know how to restart the network on my kali Linux VM.

PLEASE HELP.