That's probably a prerequisite, but the issue is, there is virtually 0 unclaimed land on Earth. You need to find some ways to avoid having larger nations stiffle you during the early days. So your options would be:
1. Use a remote island nobody cares about (or create an island in the middle of the ocean). There was an idea to create such a nation for media piracy reasons, I can't remember the name. An outlandish project where they'd buy an island, declare themselves a new nation and have very lax IP laws.
2. Find a political power void. Good candidates are places with little rule of the law and/or weak governments. Ideally a place where there is no well organised force maintaining peace. War-torn areas might seem to fit the bill, but are probably to volatile to work.
3. Go off-planet, if space colonisation becomes a thing during our lifetime.
Also, when it comes to creating a new nation, the CHAZ in Seattle is a great example in what _not_ to do. CHAZ was never going to work, but execution was so bad the problem basically took care of itself with virtually no involvement from the US govt.