Tata Group interview questions

Good, structured three rounds, all of them technical first round was about ML in general second was about my projects and work experience third round was coding but ML questions were asked during coding

techinal round went very good but i was disqualified in the final hr round and i don't even know why. later i found that hr and asked him what went wrong to improve myself and he said that he didn't like me, i don't understand his reason because i applied for a job not to get into a friendship with him.