Yes, I'd like an icon but that's not the only issue. Electrum will not start by entering the "electrum" command in terminal. It seems like it should start by doing that if it's installed correctly.
It will not open if the Electrum wallet is installed in the different path you need to target the location where Electrum is installed.
Try to find the folder then open the terminal on that Electrum folder or open terminal and locate the location of the electrum folder through commands.
If not it might be a glitch you need to uninstall the Electrum and reinstall it again just like what they did from here
https://github.com/spesmilo/electrum/issues/4721It's a well-known issue that Ubuntu 18.04 is a buggy OS of Linux when installing Electrum.
If you have a telegram account you can contact me @BitMaxz I will try to help you I just need your screenshot to see your progress.