Which is correct in this situation?

In Germany, when approaching a roundabout marked with the round blue "roundabout" sign, you must always yield to traffic already circulating inside the roundabout. This means you wait for any vehicles in the roundabout to pass before you enter, regardless of their direction or speed. The rule exists to ensure a smooth and safe flow of vehicles without confusion or negotiation at the entrance. You do not need to reach an understanding with other drivers or expect them to stop for you—if they are already inside the roundabout, they have priority. That’s why "I have to wait" is correct in this situation.