Sixt Pricing Analyst interview questions

The process was quite quick. I had the first phone interview with HR (15mins) one week after I applied. Then I got advanced to the next round 1 week later. One week after that was the 2nd interview. In total, it took around 3 weeks for my application. I was quite confident in the 2nd interview. The interviewers were really nice and tried to get to know me. They gave me the impression that I answered well, by saying quite often "very well", "your answer is perfect", "very good". And I was told that my approach to the problems was well-structured and they liked the way I solved the questions. However, I got the rejection on the next day. I tried to reflect on what I said to understand why I was rejected. Maybe I got the wrong implication from them.