Hi @terencetanjx; welcome to our Community and thanks for posting!
I'm sorry to hear about this, but to cut things short, I'm afraid you won't be able to regain access to the account in question as long as you don't have access to the email address and the password used.
That said, it may worth chacking older devices that might have been linked to your inaccessible account to see if you can find any of your files there.
I know it's not much, but I sure hope this helps Terence. Let me know if you have any more questions.