Based on experience, Edge determines itself as "managed" based on your browser settings (Policy).
Enter edge://policy in the browser and press Enter.
If there are indeed configured policies under your Microsoft Edge Policies, you can delete them in the registry.
Open the Registry Editor (press WIN+S, enter "Registry Editor"), and enter the following at the top:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge
Delete all key values on the right side, and then open Edge again.