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For the latter question, "maybe"?

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.

You might also try applying:

https://www.facebook.com/careers/facebook-life/remote/

Get a referral from someone who works at the companies.

I'm in Miami. Its hard to meet FAANG employees here.

Me too, it's hard to meet any SE here.

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.