Have you upgraded your old Windows because of forced updates, or just upgraded it to try the newer version? But, are you now missing that old simple version and want to go back? Here are some ways that you can use to downgrade from Windows 10.
Using the Recovery Method
The new thing about the Windows 10, it has an option in the Settings app by which you can easily get the previous version of your Windows.
However, there is one condition of it, i.e. it needs to be done within the 30 days from the day you updated it. If it is not more than a month, then you can proceed.