No, the only person that can guarantee you a job is yourself. In order to succeed, you must be actively involved and disciplined in the job-seeking process.
Career coaches are industry professionals that are paid to provide you insights about what it’s like to work in that field. You will learn more about terminologies and systems that are used in their jobs and familiarize yourself with commonly asked interview questions. Hence, you will gain a competitive edge of deeper practical understanding of the job you’re applying for and prepare better answers for technical and behavioural questions.