My main problem in getting away from Google is: who will protect my email/phone accounts as well as Google does with GMail and Google Voice? Sadly, those are th

My main problem in getting away from Google is: who will protect my email/phone accounts as well as Google does with GMail and Google Voice? Sadly, those are the main means of authentication for my multiple financial accounts (for most banks phone and emails are the only 2FA methods available). I am not worried about the privacy issues, I'm mostly worried about Google deciding to terminate my account for some reason. I'm also not worried about getting locked out due to losing my 2FA secrets, since I backup them in multiple places. The obvious solution would be: buy my own domain and then connect it to another email provider or G Suite, right? However, now I have a point of failure that is my domain registrar and my DNS provider, and I'm sure that even the ones that offer strong security (e.g. Gandi with U2F) are more prone to getting successfully hacked than @gmail.com, from both a technical point of view (e.g. attackers violating their systems and change the DNS records for my domain) and social engineering point of view (e.g. crafted support requests pretending to be me and begging to reset my 2FA).