I am totally new to Ubuntu. I don't want to lose my data or break anything. Will it be stable and fine if I use the command
sudo do-release-upgrade -c -d
to upgrade to Ubuntu 19 (my current version is 16.04.11)?
Also Lubuntu uses LXDE desktop environment, that's why I'm having doubts before upgrading.
If the above given command isn't the correct one, what should I do instead?
Edit: I didn't mean to get Ubuntu instead of Lubuntu, of course that's not possible without .iso. I meant that underneath Lubuntu, Ubuntu is the heart. I don't mind any change in GUI. the only reason I am upgrading is security.