404 Conky-Manager difficulty's with Ubuntu

You can use tomtomtom PPA which provide Conky Manager for 20.04 LTS:

sudo add-apt-repository ppa:tomtomtom/conky-manager
sudo apt-get update
sudo apt-get install conky-manager
# or # sudo apt-get install conky-manager2

Removal or currently added wrong repositories is possible by

sudo add-apt-repository -r ppa:teejee2008/ppa
sudo add-apt-repository -r ppa:noobslab/themes
sudo add-apt-repository -r ppa:tista/adapta

Related