And Conky... is a bit difficult...
The teejee ppa mentioned in It's foss is not so maintained. There is another one that is more maintained:
When I wanted to use Conky I also had to download the .deb file because there was a problem with conky-manager2, the gui for conky, but I didn't try it with adding a ppa.
You could also try it with the appimage that is offered in github.
But I am not sure if the appimage includes a gui for Conky settings.
If you want to use conky it is better to switch to Xorg at loginscreen (cog icon).