How do you make videos like this?

Hello, I’m sharing a video taken from a young channel that is doing very well. There are many videos like this, but that’s not the point: https://youtube.com/shorts/0bxmOsQ6Z-U?si=aiHHUj6hGJ4Nis-g 

My question is: how do you make videos like this? Do you have t to manually find each clip and then then cut and create audio for every scene and then put everything together? It seems like an incredible amount of editing work.