Locked myself (Global Admin) and everyone else out of M365 with conditional access policy how screwed am I?

I am new to all this and was following a Microsoft guide and was setting up conditional access in Entra. I set the policy to enforce MFA with phone sign in and that is the only policy I allowed (mistake number one) . I had all the products/apps selected as far as what is enforced and added myself to the user list (mistake 2).

I finished setting up the policy and enabled it and logged out and promptly got stuck …

access admin conditional access cybersecurity entra global guide locked m365 mfa microsoft mistake phone policy sign