Can i get my microsoft account back, when i don't know my email anymore?

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

Hi Kaiden!

Please go to https://account.microsoft.com website and make sure to sign out the account that's currently signed in before you proceed with the account recovery.

Once signed out, go to https://account.live.com/username/recover to recover your account by using your gamertag or phone number that may be linked to the account you're trying to get back into.

In the top right corner of my Xbox it shows an old email I don't want on there and yes I changed the billing and Microsoft email but I can seem to get rid of that old one appearing but when I sign in to my Microsoft account it's still the old email so that
might be the problem anyone know how to change the sign in email for Microsoft accounts?

If the hacker replaced my info with theirs, how can I get it back since I already made another account with the same email?

The 3 emails says, " Microsoft account security info added," "Microsoft account secuirty info deleted," and "Microsoft account password change,"

Next thing I know, when I try to sign in minecraft, it say my email doesnt exist.

Hello, Des N. I'm Arturo, and I'll be glad to provide assistance with your inquiry today.

I'm sorry to hear you're having trouble recovering your Epic Games account.

First, it is important to ask that please refrain from sharing personal information, including email addresses, gamertags, etc.

As community users, we are not able to enter or check your account information, and everything we comment can be seen by anyone on the internet.

That being said, I would like to let you know that Epic is a different company. You may want to contact their dedicated support channel to review the options you may have regarding recovering your account.
It's not possible to recover a third-party game service with a Microsoft account if you created it with a different email provider (like Gmail, Yahoo, etc.)

You can contact Epic Games support here:

https://www.epicgames.com/help/en-US/contact-us

I know this is not the kind of answer you were expecting, but thanks for your kindness and understanding.

Regards,

Arturo.