hi ahmadnz welcome to coffee snobs, The great snobs here will not treat you too harshly about (fake coffee) instant. :-?
sounds like you dont have much choice near your work place .however *if you can put up with the inferior taste of fake coffee ! keep on keepin on.
you say you *have a machine at home try fresh beans ground on demand at home , from a good roastery near you .so this means you will need a grinder however ! lots of good info on this site about grinders etc, just do a search.
maybe talk your boss into buying a coffee combo package at work or have a reputable mobile barista call into your work place .
worth a try , good luck .
V. *;D * * *The journey begins with just one sip and you will *be hooked. ;)