If I own land, can I declare independence from my home country?

If I own a piece of land, am I able to declare independence from the country the land is located it and have my own country with a different set of laws and pay no tax etc.?

Im guessing theres definitely reasons/laws why you cant because no one does it, but Im curious.

Sorry in advance if its been asked previously, I searched for it but couldnt find anything.