Hello @Hiritik ,
Please note, when the data is extracted using "Extract data from Webpage", it always creates a new Excel Instance and the data gets stored on Cell A1.

If you would like to add header to the extracted data, please use "Insert Row to Excel Worksheet" as shown below:

So the flow can look like this, In this way the Row 1 can remain with headers:

I hope the above proves to be helpful.
If this post helps, then please Accept it as the solution to help the other members find it more quickly.
Regards,
Shalini M