You seem to have a system that hasn’t been updated much. That actually is calling for problems.
Some of the packages on your list are no more available:
xorg-server-utils skypeforlinux-bin libtxc_dxtn libqzeitgeist libkolab
Some are from AUR:
webkitgtk unetbootin teamviewer properties-cpp process-cpp openslp libakonadi-qt4 kdepimlibs4 dbus-cpp anbox-image
I’d recommend you do the following:
- in pamac: set AUR support on, and set “Remove unrequired dependencies” on
- uninstall all of the above packages with pamac
- reinstall only the ones you know you really need
As a general rule, I recommend not using AUR packages if a similar or equal official package is available.