Screen Recording for the purpose of teaching has become very normal nowadays.
In this regard, the following tools are really good with many features.
CAMTASIA - https://www.techsmith.com/video-editor.html
Screencast-O-Matic - https://screencast-o-matic.com/
Loom - https://www.loom.com/
Screencstify - https://www.screencastify.com/