I can't install opera browser on lubuntu

running these commands to install opera :

to set up a key:

wget -O - http://deb.opera.com/archive.key | sudo apt-key add -

to set up a repository:

sudo sh -c 'echo "deb http://deb.opera.com/opera-stable/ stable non-free" >> /etc/apt/sources.list.d/opera.list'

sudo apt-get update 
sudo apt-get install opera

but at the end I get this message in my command terminal :

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
opera : Depends: libgstreamer-plugins-base0.10-0 (>= 0.10.16) but it is not installable
     Depends: libgstreamer0.10-0 (>= 0.10.15) but it is not installable
     Depends: gstreamer0.10-plugins-good but it is not installable
     Recommends: flashplugin-nonfree
E: Unable to correct problems, you have held broken packages.

From the command line typing lsb_release -a says my ubuntu version is Ubuntu 17.10, but I'm using lubuntu.

Solution 1:

On your terminal, run the following commands:

wget https://download3.operacdn.com/pub/opera/desktop/50.0.2762.45/linux/opera-stable_50.0.2762.45_amd64.deb
sudo dpkg -i opera-stable_50.0.2762.45_amd64.deb

wget: downloads opera-stable_50.0.2762.45_amd64.deb

dpkg: installs opera-stable using the deb file.

Solution 2:

You can install the snap version, Opera website recommends downloading the snap. In the terminal, do:

sudo snap install opera

You may require to install snap first before using above command, for this use the below command:

sudo apt install snapd