If you are trying to or change your phone's region (e.g., ColorOS to OxygenOS), let me know the exact model number (like NE2211 or NE2215) and I can look for the specific guide for your version.
To attempt a recovery with an MSM or unbrick package for the OnePlus 10 Pro, you need a highly specific environment: : The tool does not native run on macOS or Linux. oneplus 10 pro msm tool
Public access to the MSMDownloadTool for the 10 Pro is limited or locked, meaning finding a "one-click" free version is harder. If you are trying to or change your phone's region (e
: The official tool now prompts for an internal Oppo/OnePlus employee login to authenticate the flashing sequence. ColorOS to OxygenOS)