Hi Nicen,
Thanks for posting in our forum.
I go through the post carefully, per the description, it seems that you want to rename a folder after it is copied to another place. However, as the category here is not on Microsoft Power Automate but only focus on feature with SharePoint Online, sorry to convey engineers here have limited resources on testing Flows.
To make sure you could get dedicated help on building flows in Microsoft Power Automate, I would sincerely suggest you post in Microsoft Power Automate Community which is a dedicated channel for Power Automate related questions. Members and engineers there are more professional on such questions, you may have better experience of getting support and the resolution there more efficiently.
Also, I found some similar threads in Power Automate Community and hope they could offer a bit ideas on your scenario.
Solved: Copy and Rename a SharePoint Folder - Power Platform Community (microsoft.com)
Solved: HELP Rename copied sharepoint folder - Power Platform Community (microsoft.com)
Solved: Copy SharePoint File to multiple folders - Power Platform Community (microsoft.com)
Thanks for your understanding and hope your concern could get resolved perfectly in related community.
Best Regards,
Mia