[ubuntu] Can't install things through apt, packages have unmet dependencies

I just ran into a problem on my old iMac running ubuntu 16.04. Whenever i try to install something through apt, it give me this: http://pastebin.com/CggrR0Pt. So I run sudo apt -f install, which returns this: http://pastebin.com/Ku9aEMbX. I don't know what I should do to fix this.. Any ideas?