Record my Screen - Not Full Screen Appearing

thanks for the feedback. Could you attach a screenshot for this?
> My problem is that I record a video of my screen in Zoom but only part of my screen is shown while the rest is a black background. How do I resolve this ?

The default setting for the recording resolution is 1080p(for final video), if the screen is the same resolution as 1080p, the full screen will be recorded, otherwise, the left and right will be fill black as padding for make the final video as 1080p.  I am not sure this is your case or not.

and for : "Also is 'Clips' the best alternative or it can also work doing a Zoom Meeting myself and recording it ?"
If it is just for youself, I prefer to Clips.