It depends on what your alternatives are. My guess is that it's not worth it because you still have to pay the taxes an employer would and what an employee would - social security and income taxes. You can take a look at the calculator: https://www.calkoo.com/en/salary-calculator

The taxation system itself is very simple, if VAT isn't involved. You can just enter your annual income and the calculator will tell you all of the numbers. Just make sure you use the "salary/wage fund" as the income field for a freelancer.

One thing to keep in mind though is that countries where you actually perform the work usually want a piece of the pie. That can complicate things significantly.