I also failed my Google interview in 2016 but later nailed my 7 interviews for Apple in 2019 and went all the way. However I realized quickly that I did not even want any of this and said bye quite early. It's mostly hype and "exclusivity". It's all about learning to dance the way they want you to (by memorizing classic algorithms). But even if you make it in, you'll really just be the "bitch" to some mid-chief anyways and we shouldn't even begin to talk about the enforced political views they demand everyone to bow down to. No thank you.