I suspect what’s happening is, your resume looks great to recruiters/HR/manager, so you get the initial call(s), but somewhere through the process things get hairy. You get talking to engineers and they’re: impressed with your experience, but can’t afford you; lost by your experience because you’re talking from experience using in-house FAANG tools and processes; intimated by you; put off by some kind of interpersonal quirk like not asking enough questions or the right ones.
The tough thing about interviewing is it’s basically a tough sales call, and it’s administered to people with little sales experience. Here’s a quick tip: ask questions about what problems they’re facing right now, and tell them how you can solve those problems for them.