I have a LinkedIn but I don't really keep it actively updated. But for my current FAANG job I was sourced via LinkedIn. Received a random recruiter inbox message there and eventually was hired.
That might get you a recruiter call, but it's not at all helpful in actually getting the job.
Best thing is to build a solid LinkedIn profile. I've had multiple FAANG recruiters reach out in the past based on my LinkedIn profile, but my own applications have never received attention.