Windows 10 has a built-in video editor in the photo application. No wonder not many people are aware of it. It is a usable video editor however for people who are accustomed to video editing software with a timeline, then you may get disappointed.
It can be difficult to do things fast on it due to the way the user interface is set up. However for a complete new people, you can get a video out from it especially if you just want to convert some slides into a video.
In my experience having used it a few times, I’d only use it as a last resort.
However, depending on your needs, in can work if you make the occasional one or two videos.