Also, every registrar sends you scary emails before and after a domain expires and enter the redemption period [1].
That means you failed to:
- register for 10 years in advance
- pay attention to your email for at least 60 days (including your redemption period)
- enable auto-pay
If you had done any one of those very normal measures for a high-value domain, you would have kept your domain.
1. https://www.icann.org/resources/pages/domain-name-renewal-ex...