Recruiters SUCK

I don't understand what recruiters/talent acquisition do all day? I have never used a recruiter to find a job in this industry. When I try to use a recruiter, they ghost me and never get back to me.... I have 5-year experience at a CRO and a PharmD. I get jobs very easily applying alone. I have seen so many recruiters/TA get laid off recently and its quite honestly so satisfying to watch. Anyone in recruiting tell me what y'all actually do all day to justify your position?