Finding Hiring Managers in Job Postings: Seeking Solutions

Doing a search via "find jobs" then have filtered based on job title. ~1500 job postings come up. However, most of them are through recruiters or a job posting bot so I'm unable to see the companies posting the job. This means I'm unable to find people at those companies to contact (goal is to find hiring managers at these companies). Is there a way around this? Help desk told me they don't think so but wanted to ask here.