CAW, the history of the islands is far more complex than just 1833. As I'm sure you wil know, The Falklands changed many time throughout their history. One single occupation getting on for two centuries ago is hardly relevant today. Unless, of course, you think your homeland should be returned to Spain, regardless of the inhabitants think? Or that ALL the former occupants of The Falklands through the centuries should also have a claim.
Even if your country had any kind of moral claim to the islands, you gave it up when you used violence to invade and capture them and used force to place the rightful population under enforced rule against their will and in contravention of International Law.
You lost the right to complain in the eyes of the world. Time to give this one up.