There are excellent free and open-source video editing software options available, such as Shotcut, OpenShot, and DaVinci Resolve (which has a powerful free version). These programs offer professional-grade features without the need for an authentication code.

Magix often offers free trial versions of their software, allowing you to test the features before committing to a purchase.

Consider subscribing to a service like VEGAS 365, which provides access to the latest version of Vegas Pro for a monthly or annual fee.