Hi Darren,
Thanks for posting back.
Here is an example.
- Create a new workbook to store the responses.
- Open the original workbook and copy the entire table, paste it into the new workbook
- Create a Power Automate flow

a. Go to https://make.powerautomate.com/, sign into your account, click "My flows" on the left sidebar, New flow, Automated cloud flow, choose the trigger "When a new response is submitted".
b. In the trigger "When a new response is submitted", click the down arrow and choose your form.
c. Add the action "Get response details", choose the form in Form Id and select "Response Id".

d. Add the action "Add a row into a table", select the relevant group/location, library, select the new workbook and its table, in Advanced parameters, add the relevant parameters from "Get response details".


Also, you can view the YouTube videos to build such a flow.
https://www.youtube.com/results?search_query=Power+Automate+Submit+MicroSoft+Forms+Responses+to+Excel+Online
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We look forward to your response. Thanks for your cooperation.
Sincerely,
George | Microsoft Community Moderator