i installed youtube-viewer as per the documentation: https://github.com/trizen/youtube-viewer
sudo add-apt-repository ppa:nilarimogard/webupd8
now i don't want it, but:
removing it as suggested here does not work: https://www.omgubuntu.co.uk/2019/12/how-to-remove-ppa-ubuntu
sudo add-apt-repository --remove ppa:nilarimogard/webupd8
it is not listed in software and updates where it might be removed as suggested here: https://www.makeuseof.com/tag/linux-ppas-installation-removal-security/
is it true that "When installed directly from the source (as opposed to building it as a package and installing it with the package manager), I'm afraid [manually deleting the files] is the best option"? https://github.com/trizen/youtube-viewer/issues/133
thus: ppa should generally be avoided if it's such a hassle to remove, or this is an unusual case?