OP missed six months of opportunities because he is an idiot, that has been scammed by a tax consultancy that is interested in his money.
He should have setup a UG, start the business and invest into building a GmbH.
Or change something. But yeah, I agree that leaving a country that you don't like is a good solution. I did that myself.
> There is no justification for tax evasion
The basics of philosophy behind taxation state exactly the opposite: it is an obligation of a business to evade as much tax as possible - as long as it is legal.
I'm sorry, but Germany is democratic country, and citizen of the country can choose by definition.
Leave your motherland because your government is crazy in one way or another? It is nonsense.
In reality, sometimes people need to do it (because it becomes too dangerous to stay), but it should not be this way. In any country.