Miscellaneous topics that do not fit into specific categories.
The URL format xxx-my.sharepoint.com/:x/r/personal/john_doe_org indicates that the file is stored in someone else's OneDrive for Business, rather than a regular SharePoint document library.
OneDrive for Business connector does not support cross-drive operations. It can only operate on files owned by the account used for the connection. This explains why you may not be able to locate the shared file in Power Automate, even though you can open it in Excel.