Lyzr Backend Engineer Gen AI Applications interview questions

I was contacted by a recruiter and had the round scheduled, There were three rounds in total, two technical and one hiring manager round. The technical rounds went very well. In the first round i was asked some python and personal project questions. In the second round, I was asked more about GenAI, langchain/langgraph and a DSA medium level question. Third round was the Hiring Manager Round. The Hiring Manager did not seem interested in my profile from the start. He asked questions upon the system design of my previous projects, and mostly reason for every specific solution. Third round also went well. I had a good discussion,but 3 days later, I contacted to the recruiter and he said, they have rejected because my experience in GenAI is not much. Honestly I was disappointed after hearing this, since why take a candidate to third round if they had to reject him based on the experience, in fact there must be something better in me that others, which could have made me till the third round