As you know, it is now clear that Microsoft has forced users to use Windows 10. The latest incident is that the new Office (Office 2019) cannot be installed on Windows 8.1 or earlier versions. This means that you will not be able to install it again if you are using Windows 10. I think this is only the beginning. A few years from now, when older versions of Windows OS are no longer supported, upgrading Windows 10 is the only way to secure your PC. This is a detailed guide on how to get the original version of Windows 10.
The download process is fast or slow, it depends on your internet connection.
And this is a good file from the 12 minute wait.
If you have any questions or concerns, please leave a comment. I would love to explain more details. Thank you so much for all your feedback and support!