Hello I Have Lost my minecraft Account, My Emails and Passwords No longer Work, So Sadly I will most likely Not Be Able to Play Minecraft for a While Now..... -LegendairyCowIV
I am pretty sure if you go to account.mojang.com that there is a forgot password button, where you can send an email to the email you used for it, which will let you reset the password.
But if the email account doesn't work, then doesn't that mean he won't be able to reach the email? Anywayz, rip, I hope you find another way to recover your account!
If you were to lose access to your email account, they tend to have various ways of recovering it, such as an alternate email or a cell phone number, in which you get a code, and it has you type it into the site in order to regain access to your account.