this meme once again shows a Linux terminal command (that only works on specific distros)

sshfs only works on certain distros? Oh you mean the apt install part.

the button in the File Manager to add the network share to your left sidebar.

I just browse to the network location I want and right click on the view in the file manager and select “add to places”. It will be there on the sidebar until I remove it. Yes it is there after a reboot.