[HELP] How do you create (mockup) animations of your SaaS software in action?

Hey guys,

I want to add an animation of my software's features in action to my landing page.

Just like what you can see at the top of this page: https://jenni.ai/

The actual platform doesn't look like that ^^ but it is similar. How can I do the same thing to showcase features on my landingpage? please and thnak you for the help!!

If anyone is capable of doing this, please hit me up!