Need help creating a new row in editable table in a canvas app

Good Morning!
I am new to Power Apps and I am in the process of creating a Contacts page in canvas apps. I have two dataverse tables, Contacts and Customers. I need to add a row to my table to allow them to add a new contact. The Contacts table has a related Required field called Company Name that links to the Customer table which is also a required field there. I feel like I have watched every video and read every document out there on Patching. I’ve attached an example of one of the many things I have ran across online. I appreciate any assistance with this!!