Minecraft bedrock edition I need help to unlink my old Microsoft account from PlayStation

I need to unlink my PlayStation Network account from my old Microsoft account which I don’t remember, & link it to a new Microsoft account to play Minecraft

You can unlink the psn account however you CANT link a different one.

Note: Once a Microsoft account has been linked to a PlayStation® account, neither the Microsoft account nor the PlayStation™ Network account can be associated with a different account. 

If you choose to unlink accounts, then purchases will be returned to the account which made the purchase. Even after unlinking, Microsoft and PlayStation® accounts can only be re-linked to the original account.

This is coming right from the Minecraft website

https://help.minecraft.net/hc/en-us/articles/360037725571-Minecraft-for-PlayStation-TM-4-FAQ

Hi, I'm , an Independent advisor and I can surely help you.

Don't worry we will work on this together. You can unlink it by going to the Settings of your console then Navigate down to “Account”

Inside here, you will see a button at the bottom called “Unlink Microsoft Account”.

Click this and accept the warnings.

You have now unlinked the account from your PSN version of Minecraft. Thanks!

Unfortunately you will not be able to unlink a Microsoft account from a PS Network account without loosing the game entitlement.

For more FAQ about the Bedrock Edition for PS have a look in the link below.

https://help.minecraft.net/hc/en-us/articles/360037725571-Minecraft-for-PlayStation-TM-4-FAQ

So recently, I remember my old account associated onto my PSN account, and basically I'm trying to regain access to the old account.

But then suddenly I forgot the email for this XBOX Profile "ANewGamer098123".

I really, REALLY need help on this, I'm trying to sign in to this account. So that I could remove access to that old account, and add my main account to the Minecraft game.

I'm on the PS4 console, and it is still permanently linked from my old Microsoft account to my PSN account unless I unlink it while I'm signed in to the old account "ANewGamer098123". (a.k.a again need the email from that XBOX Profile)

Could you please help me find the email from the XBOX Profile I just said? Thanks...

You wont be able to do this.

Per https://help.minecraft.net/hc/en-us/articles/360037725571-Minecraft-for-PlayStation-4-FAQ

Note: Once a Microsoft account has been linked to a PlayStation® account, neither the Microsoft account nor the PlayStation™ Network account can be associated with a different account. 

If you choose to unlink accounts, then purchases will be returned to the account which made the purchase. Even after unlinking, Microsoft and PlayStation® accounts can only be re-linked to the original account.

It also says:

Note: As of March 15, 2023, please DO NOT unlink your MSA from your PlayStation account via the in-game menu. You will be unable to link it back if you do so.

Hello, Paynter!

Minecraft Bedrock Edition supports cross-platform play with Xbox One, Playstation 4, Windows 10, Android, iOS, and Nintendo Switch. To play with someone on Minecraft, you'll need a Microsoft account to do so, no matter the platform.

I hope this helps!