Need Help with iCloud Account Recovery: Lost Two-Factor Authentication Number and Country Code Confusion

I'm facing a challenge with my iCloud account. I know my Apple ID and password, but I've lost access to the two-factor authentication phone number. I'm trying to recover my account, and the recovery process requires an 11-digit number. I suspect the country code might be causing the issue as the original number was in Japanese format. I've tried variations like 18098650262, 8098650262, and 08098650262, but none seem to match. Has anyone encountered a similar situation? How can I navigate the account recovery process when the two-factor authentication number is lost, especially considering the potential impact of the country code? I appreciate any insights or advice. Thank you!"