Where the confusion comes in, i think, in some instances is how some people use OBS Studio (for us dinosaurs) and how that gets communicated to non-technical people.
What OBS Studio can do is take multiple sources (audio/video, etc) and combine (composite) them. For example, you can add an overlay, etc. Typical usage for OBS Studio is for one or more application windows and a camera, and one or more overlays, composited into a single video. some people will refer to that as 'editing' but other than cropping or basic filtering, you don't really use OBS Studio for video editing. And beware the idea of 'playing' a video, making some tweaks and saving the results. Why beware? because most video is lossy compressed. meaning each time you 'edit' the video and 'save' it you are doing a similar thing to the video quality as when we made VHS tape copies back in the day (just not as obvious, but loss of quality still typically happens with each edit ... minor exceptions do exist)
PC Magazine ZDnet and others have annual compilations of Windows OS video editing tools. The best (most complex/powerful/capable) free video editing tool is probably DaVinci Resolve... but it can be VERY intimidating to learn to use (more so than OBS Studio). There are much easier/simpler (free) video editors, though which one would be best for you depends on the extent/complexity of the editing you want to do. Windows itself has a free built in video editor.
the other thing to beware of is video editing can be VERY computationally demanding. If you have the 'right' hardware, you should be fine. but there are lots of systems that are not capable of real-time video editing. What is the 'right' hardware you ask? unfortunately, that quickly gets complicated with a lot of 'it depends' factors.
