Can anyone tell me why?

I don’t want to shed tears of sympathy or say words of persuasion and comfort. Only suggestions:

The biggest reason for failed attempts may be: only knowing yourself but not knowing the enemy.

Points to note when trying again in the future:

1. Through online inquiries or introductions from old employees, you should have an understanding of the general situation of the unit and the types of personnel to be recruited.

2. Shape yourself and show yourself according to the recruitment requirements.

3. Remember the company’s entrepreneurial spirit and corporate culture; pretend to be an envious admirer of the company; show your love of learning and willingness to endure hardship.

Your original self-introduction must be modified based on the above content. During the interview, both oral and written expressions should highlight the "three key points" mentioned in Article 3. I wish you success.