How to select the right negative in phrase match? Suggestions please
I market cyber security services on Adwords. We provide and service for managed security in the field of cyber security.
I am using an phrase match keywords such as "managed security", "cyber security managed services",
"managed security provider" and a Broad match modifier search as +managed +security +services.
In this process, my Ad is being shown to companies of security guard companies, armed security guards, Security guard services. Which none of these are our targeting audience.
How do I add negatives to my campaign to avoid this audience?