What finally made me leave Google a few years ago was when I was suddenly and inexplicably logged and then locked out of my account from my home PC on my home IP address...and I realized that the whole system is completely automated and that it's impossible to get any actual support in the event of system error. No matter what information I gave them, they thought my log-in attempt was suspicious and just kept asking for more information until there literally was nothing else left to ask and I still wasn't allowed back in.
I ended up switching to ProtonMail where I can log-in from any device on any IP, and where you can setup TOTP 2FA, which is pretty much the only type of 2FA that I want - texts, phonecalls, emails and the like are all dumb, as are Google's random security and account history trivia questions. ProtonMail isn't perfect from a UI standpoint, but at least I don't have to worry about getting banned by some automated system for completely inscrutable reasons anymore.