I can't log in to another email account

Hello, I can't log in to my other email account even though I'm entering the correct password. I'm getting a message stating that there was suspicious activity and I need to verify that the account belongs to me. I can't use my phone number for this because the SMS messages aren't coming through, and the phone I would use for verification is broken and not working. How can I access my email? I tried to recover the account and provided detailed information, but the automated system rejected my request, stating there wasn't enough data.