Help needed to unlock my iCloud account

Hey, I’ve really worked my self into a pit here and I need some help. A few months ago, I made a new iCloud account(not this one). Fast forward to now, I’ve forgotten the password to it. For some reason, I set it up using an iCloud.com email account, meaning I can’t access anything sent there as a recovery password. I also, for some reason, must not have entered the right birthday and therefore cannot get to my security questions, although I’m doubtful if I would know those either. Is there a solution to this?