Why can't I apply for operation and maintenance?

I also do operation and maintenance. Don't dwell on the company interview. There are many reasons for not being interviewed.

Here I will talk about several reasons why interviewers don't recruit: (Other companies may have other reasons, and the specific reasons should not be known only to themselves)

I feel that the experience is not good and I can't meet the requirements, but the company just wants to recruit someone who can work immediately without special training, or the interviewer thinks that you are not worth the salary or exceed the salary ceiling expected by the leaders according to the interview situation;

I interviewed many people, but there was only one position.

3 I don't plan to recruit people, just want to know some ideas of other companies through interviews;