Hi there, I am John J.D., a fellow Microsoft user like you.
I understand your frustration with the Fn key issue. If your keyboard has an Fn lock key, you can try pressing Fn + Esc or the key with the lock icon to toggle the Fn lock. This should allow you to use the F keys without the Fn key.
If your keyboard doesn't have an Fn lock key, you can explore changing the Fn key settings within Windows. Depending on your keyboard brand, you might find these settings in the Windows Mobility Center or your system's keyboard settings. If you're unsure, you can check the manufacturer's website for guidance on customizing these settings.
If issue persists please let me know. :)
John J.D.