How would you get cinematic shots for a trailer?

I’m not asking the specifics on making a game trailer, mainly just cinematic shots when showing a trailer. For reference, I used the Gears 5 horde mode trailer:

In the trailer, you can clearly see video of gameplay but it's not being taken from the player's perspective. The camera shows the game being played, but it's flying. I don't entirely understand how I would go about doing this, especially if it is a single player game.

Its a second camera. Most use a cinematics asset/prog, like Cinemachine, or Cinema Director.