Can I use the toll-free mastercard gold for Probemonate for free?

So my question is whether you can use the free of charge Mastercard gold from Advanzia bank for Probemonate for Netflix or Spotify free of charge without paying interest or otherwise

What do you mean?

You write that the card is free of charge. Of course, you have to pay for any burdens due to the use of the card. If (for example in Netflix free trial month) no costs are incurred, the card will not be charged. If you go shopping with it, of course you have to pay.

For this credit card, there's no offer with Probemonat. As long as you settle the billing on time, it is and remains free of charge.