Could you please share a bit more about your issue?
Do you mean that your Edit form not be reset as New form when you save one record and create another record?
Further, do you want to display a form in an app and create or edit an record using Microsoft Flow?
For your issue, if your Edit form not be reset as New form when you save one record and create another record, please check if you have reset your Edit form after your submitted a form data.
Please add the following formula within the OnSuccess property of the Edit form:
ResetForm(EditForm1) /* <-- EditForm1 represents the Edit form within your app */
Set the OnSelect property of the "+" icon (Add record button) to following formula:
In addition, if you want to create or edit an record using Microsoft Flow, you must pass the parameter values from your app to your flow firstly. I don't think it is a easy way to achieve your needs.
More details about starting a flow from an app, please check the following article and video:
Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.