I've cancelled my subscription yesterday, conveniently it was about to renew at the end of the week, so I have a few days to migrate from Proton, here's what I'm thinking of, but I'd love to hear what other people are switching to
Basically there's no way you could get an email address of just: [first][last]@gmail.com on Gmail, because there are so many users of Gmail. That's not the case for newer services with less users.