Serious issue with signing into my old Xbox 360 acc.

The only way to change the email linked to an account is through the steps below. There is certain security measures that has been taken to ensure that accounts is protected from unauthorized changes.

https://beta.support.xbox.com/help/Account-Profile/manage-account/change-email-sign-in-for-microsoft-account

...when ever I go on my Xbox 360 and try to sign in, asks for verification. Seems simple, so I enter my **BROTHER'S** password (since he does not use the account anymore, he is letting me keep it, since I play on that account more than he does),
an error pops up.....

What error pops up exactly? Maybe we can help if we know the error message.

If you haven't used your account in the past years, when the need for verification came up, you need to sign in to

https://account.live.com/proofs/manage with your own account email and password. Not your brother's one.

There you can (and should) add another E-Mail for recovery purposes. Make sure you use an email you regularly use, beacuse if the Email gets deleted due to inactivity, you can't recover your account!

I try to make an email, and guess what. IT ASKS ME FOR MY PHONE NUMBER. This is a problem for me because, ... I don't want to use my dad's phone, ....

Where did you create your email? Yahoo? Or did you create a Microsoft Account?

If it's a Microsoft Account, you can use a secondary email instead of a phone number. Or simply use your dad's phone number, and it will NOT get garbage or other shenanigans. Having a phone number on your account helps to recover your account or to prove
ownership of the account if you lose access to it (as you have this problem right now).

Having a phone number where Microsoft can send a confirmation code to, would immediately give you access to the account again.

This also means: should you ever get your own phone, or your dad changes phone numbers, make sure to keep that number up to date in your account settings as well!

So I try to verify and let them know I don't have this email anymore. I answered the questions that it gives me, and I provided the console ID and the username and all that stuff. I tried this over 9 times, and this monitoring thing repeatedly denies
my requests to move a new email. I try too many, and it locks me out from trying it again for 2-4 days....

Unfortunately, the account recovery form is that strict on purpose. In the past, hackers tried to abuse the account recovery to social engineer support agents into giving them other people's accounts, where the hacker got hold of some personal information
like birthdate or home address.

If you are unable to provide enough "believable" information that you are really the owner of the account (and if you try to get your brothers account, Microsoft can't know if you're not really trying to hack into your brothers account), then Microsoft can't
trust you enough to be the real owner, and will refuse the attempt at account recovery.

To slow down hackers, they will also block the recovery feature if enough failed attempts have been made. So if the real owner gets notifications about failed recovery attempts, he can take action to protect his account before hackers get a new attempt at
account recovery.

So, there is not really much we can help you with. If you forgot your account credentials, and Forgot the Microsoft Account
Email Address for your Xbox Live account? Learn How to Find It doesn't work for you, and the account recovery doesn't work as well, I'm afraid that your account is now lost.

You would need to make a new account then. And this time, do NOT lose your credentials, and DO verify your account, and DO have enough fallback emails and phone numbers added to the account to be able to recover it.

here is the link to recover your password.

https://support.xbox.com/en-GB/my-account/microsoft-account/lost-password-solution

once you have done that you can change the email associated by adding yours as an alias then promoting it to main email address. the following link will guide you through that.

https://support.xbox.com/id-ID/account-management/change-email-sign-in-for-microsoft-account

if that doesn't work you will need to talk directly to support (either chat or request a call back)

go to
https://support.xbox.com/en-US/contact-us

Select Billing & accounts in the category area

Select See other options

Select How to protect my account

Select Show contact options

Select Request a call from Support

or

Select Billing & accounts in the category area

select See other options

select Recover my account

select Show contact options

select Chat with Xbox Support

hope this helps

yes i have forgotten the password for the acc but i can still sign in on my console, the old id was shut down so i have no acces to it all

And i didnt login to a acc on my xbox one its a microsoft my 360 acc is just a profile.