Minecraft acc is linked to an email that doesn't exist/work anymore and won't let me play...

Unfortunately, Sony does not allow you to change the connected accounts. Once a Microsoft account and a Playstation account have been linked, that's it. You can unlink them but you can never link that Playstation account to another Microsoft account and that Microsoft account cannot be linked to a different Playstation account. This is all Sony's decision. The linking is handled on their end so there is nothing that Microsoft can do about it.

Hello and welcome to Microsoft Community!

I've noticed that you've been playing Minecraft and you've been asked to log in with an invalid account even after you've recreated your account. I understand your frustration and don't worry about it, but try contacting the developers of Minecraft to give them some feedback on the situation, and they'll be able to provide you with more effective help and advice.

Best Regards!

Leo - Microsoft Community Support Specialist

the email for that account was dovietthang134@gmail if that's needed
Paid Minecraft, create a Microsoft account linked with that email dedicated to Minecraft
And now Microsoft just straight up telling me that account "doesn't exist" after a month of playing

the parent email address is spelled wrong so it doesn't exist and won't let me accept

Logging in online still only brings me to the new account. It's like the old account doesn't exist anymore, but the Minecraft launcher is the only thing that still shows that it exists.