Solved: Power Apps validation failure

I have a field Supplier Email, I have applied validation there to enter user only correct email but even user enters the wrong id (shows red because of validation failure) they are able to submit it.

Now my requirement is - until user enters the correct email they shouldn't able to submit the form. How can I achieve this? Which field property should I use to achieve this ?

I have used the IsMatch formula on color,border color, on change property but it still shows red or green color based on validation. But it never stop the user to enter it correctly and stop the form submission.