Gmail Account Recovery Assistance Needed

I’m locked out of my Gmail even though I still know both the email address and the current password. Unfortunately, the recovery phone number and recovery email on file are no longer active, so Google’s standard account-recovery form stops me before I can verify anything... (Budget: ₹600 - ₹1500 INR, Jobs: Account Management, Digital Forensics, Email Handling, IMAP, Technical Support, Troubleshooting)