Taxes on donated money throught paypal - streamlabs. What happens when i extent the taxes free limit?

I want to start livestreams and youtube as a hobby but i'm afraid of taxes free limit. To be honest i can't understand how tax free limit works.

So the questions are.

1: In my country the tax free limit is about 5.000to 8.000 euros. As far as i'm below this limit, the only thing i have to is to report my income from donations?

2: What happens if i extent the tax free limit? Then i have to register as an intepedent worker, get healthcare and pay each month 200+ euros? Or i can still just report my income and pay the necessary taxes?