alt Hacker NewsYou're going to need to buy your own domain and move to a solution that has you being responsible for your own email.
Note that doesn't mean you have to do it all yourself, there are plenty of hosting places that you can just configure with your own domain name details.
I have all of this. You need a google account to use GCP and I used my google account which was created with a gmail invite code shortly after gmail was released.
Some things are still using this email. Hey, I'm not perfect. Sometimes I exceed posted speed limits, too.
Edit: I have to choose a tech giant to get a phone app with decent push notifications as far as I can tell (I haven't scoured the earth for this .... yet) The gmail app is pretty good.
Here are options I can recommend: Proton Tuta Apple (iCloud)
All of these withh be your MX with DMARC/SPF. If you use an android cellphone you'll almost certainly need a google account anyhow. The tuta experience is not as advanced as the others, but is servicable and likely offers better security guarantees than the others. You get a lot of bang for your buck from Proton (personal wireguard tunnel vpn included), and apple is apple.