How can I add a screen with a notice to indicate that the form was submitted successfully??

After clicking the submit button, the data was submitted but the screen does not change, this can be a bit confusing for the user (to know if the form was submitted).

After click submit button,

1. How can I add a screen with a notice to indicate that the form was submitted successfully??

2. How can I add a button or link to send a new form or restar the form??

In the image bellow i click the submit button, the data was sent, but the screen doesnt change or clear the fields to sent a new form

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