Excelra Knowledge Solutions Research Associate interview questions

There were 3 rounds. 2 Technical and 1 HR rounds. I performed well. Still I did not get the job. Seriously I dont know the reason for not being selected. In the second round of the interview, Recruitment Panel member was happy with my performance. Though I did not get the opportunity. Instead I received a mail that though you are impressive, we are decided to offer this opportunity to other candidate. So try again for the suitable position. I am very much worried.