That 'Organization' error usually indicates there is a volume licence version of Windows installed on your PC, not a consumer licence version, the person who re-installed Windows has installed the wrong version on your PC, and you will not be able to activate that.
1
Click your Start Button, type cmd then right click Command Prompt and choose 'Run as Administrator'
Run or paste this command and hit Enter:
slmgr.vbs /dlv
Please post a screenshot of the resulting dialog
3
Download the free ShowKeyPlus app from the Microsoft Store.
Please provide a screenshot of that app window and please hide your product key in the screenshot.