I was shocked and puzzled when I realized there are many packages are missing in xubuntu 19.04 such as qrfcview, and many others. Those are not available regardless of which package manager is used, GUI or cli.At this point I am starting to lose confidence I once had with ubuntu.Please elaborate.
The list of other distros not carrying
qrfcview may help you hold on to your confidence in Ubuntu: https://repology.org/project/qrfcview/versions
In particular, if Debian drops a package, Ubuntu, which is based on Debian, will follow suit.