I have my gamertag and my password, but, I don't know my email because my account is old

I can't access the account page on my xbox because I am not connected to xbox live. I do not know the password to my old email account. I don't know how I am going to change my gamertag to the account I want without being able to access the account page.

Like I know my gamertag but I don't have any clue about which email i used because I deleted the account off of my old xbox

Hi M G Scottt,

You will need to contact phone support and ask them to look for your gamer tag and if they can find it they will go through a security process with you. And if you pass they can give you your email if not your only hope will be to locate the last console
it was saved on and hope you had the profile to auto sign in. If this is the case you'll be able to get the email off the console.

Well, this page covers account recovery but you still need to know the email address as that is the primary identifier of the account. Without the email, i don't believe there is anything they can do

https://support.xbox.com/en-GB/help/account-profile/manage-account/forgot-microsoft-account-solution

i can't re download the account because someone changed the email to it but the gamertag is the same, it's just my gamertag except without the zero at the end. if there is anyway to get it back please let me know. this happened a year ago and i still remember
the original email and password used the old account.