This post seems to have been flagged but I want to thank everyone for their suggestions and future measures. The plan for now is: 1. Retry again with email/pass in incognito in a 24 hour interval; 2. Try to get the same phone number from the telecom operators; 3. Make Subject Access Request (EU) to Google in hopes of at least getting my data back.

In order not to get caught up in the same thing again there are many good suggestions in the comments, all with some overhead/friction but 100% worth it if you ask me :D.