Unpopular Answer: Paid Google Workspaces.

Really boils down to how many users you need. I am your stereotypical 1 user with a catch-all, and I just make up email addresses on the fly. For $6(+tax)/user/month, for a single user just paying them made the most sense.

But I wouldn't make the same decision if I had e.g. 10 users on the free tier, and it is over $70/month after tax.