I am Chartered Accountant, having an experience of around 8 years from Deloitte and EY. I got an invitation from Mckisey of game which I failed and got an rejection email from Mckinsey the very next day that I would able to apply again after 12-18 months then in January 2023 I got an invitation from Bain & Company Middle East for Sova Assessment, I did that assessment and today I got an rejection email from Bain but they did not mention the reason of rejection neither the advice me to reapply after 12-18 months so I am confused here. What I did wrong in my both applications. I don't understand the reason of rejections.
Do I need to work on my resume or cover letter or do I have not a sufficient knowledge which they are looking for? before taking an interview how I do just got rejection based on some assessments?
Looking forward for the answers!