Oh no you can’t. Building a ship that can cross the ocean (without you drowning first of course) is actually quite difficult. Not only does it have to be extremely durable, you also have to have a lot of knowledge to navigate. And then there’s the economic problems, like who pays for it, how do you get enough food, etc…
Yet, people made the journey to Australia over 50000 years ago, long before they had developed agriculture, wheels or domesticated animals. There was no navigation or fancy ships. And they did in the hundreds. Enough genetic diversity to settle down for the next 50000 years.
We are very far from doing that in space and beyond our solar system it may even be completely impossible. But who knows what happens in the next 50000 years.
