Do you want to capture your desktop screen activity, It does not matter which OS are you using from Windows, Linux or Mac. Screen recording softwares are available for all Operating Systems.
Windows and Mac Screen Recording softwares are expensive and free screen recorders does work well.

But in Linux, There are many options, Kazam, VokoScreen, SimpleScreenRecorder, RecordMyDesktop, and OBS Studio are very popular and completely free screen recorders for Linux.

To edit your videos, You can use KdenLive, and other free video editors.

Please take the opportunity to connect and share this video with your friends and family if you find it useful.