Should I Resume Studying for CISSP or Is It a Waste of Time in the Current Market?

The author of the post previously worked in the field of cybersecurity for a few small companies before transitioning to a network engineer role in a large company. They are wondering if obtaining the CISSP certification would help them return to the cybersecurity field, given that their previous applications have been rejected by large companies. They already hold the certifications Sec+, Linux+, Cisco CyberOps Assoc, CCNA, and CCNP Sec.