This is probably the #500 post on HN that reads "help I've been locked out of my Google account for Kafkaesque/inexplicable reasons and I have nobody to reach out to". If you're still using Google products as your primary drivers, then it's entirely your fault. Do yourself a favour in 2023: drop Google and all the filthy excrement that they produce. There's plenty of much better alternatives, and from a purely market…
What the poster can do in the future is enable 2FA on his Google accounts as that seems to streamline password recovery. At minimum add a phone and backup codes. Even better add a couple yubikeys (and maybe drop the phone after adding yubikeys because phones are super easy to compromise)
Same goes for GitHub.