@norashura below are the details:
1. Add SPItemID column to your spreadsheet (you wont be able to make it hidden as flow requires it to be visible, if you want to hide it probably you can make its width too small and move it to being last column in spreadsheet)
2. Then in the "List rows present in a table" action add a filter query as below. This will get only those rows where SPItemID is blank
SPItemID eq ''

3. Within the loop after create item action, add Update Row action and configure it as shown in below screenshot

In Key Column, provide the name of column which will uniquely identify the row the flow needs to update with the newly created SharePoint list item ID. Here you are updating the SPItemID with the newly created SharePoint list item ID so that again when your flow runs this row will not be processed by flow.