Thank you moderators and commenters
I want to thank the moderators as well as commenters who have taken the time to post information on how to avoid getting locked out of a Gmail account. I stumbled across this sub a few weeks ago and was horrified (to the point of physical shaking) to realize that I had done exactly the same as many of the locked-out users had – entered the same email address for recovery; no active recovery phone number; and so on. (I did have a printout – somewhere – of the recovery codes though). I’ve had this account since 2007! In my defense, I’ve primarily accessed my email for the last decade via Apple’s email app and not the Gmail app or URL, so obviously did not have the “Google Account” icon in that app.
Because of all your recommendations to other users, I now have a verified recovery email; verified recovery contact; three 2-step verification telephone numbers; 2FA set up and tested; recovery codes printed and filed with important papers; passkeys; 2 Yubikeys; and so on.
Hopefully I can sleep better now! Thank you again for all your efforts; they do not go unnoticed.