Cybersecurity is all about risk management and reduction. You cannot get rid of all risk. Well, I guess you could, but you (and everyone else) would probably not want to work in a true zero-risk environment. It would be too locked down, super slow, and incredibly inflexible. Cybersecurity is all about identifying the most likely and impactful risks and reducing them. To repeat, cybersecurity is about risk management. Identify the biggest risks and mitigate those the best you can. That is your job.