Best way to do a fade to black for new cam view

What is the best way to fade into a new camera if it’s just a simple fade to black, then show new camera view?

Is it better to just put a huge cube in front of the camera then fade its alpha? Or is there a way to do this directly on the camera?

Not to be rude, but I found this answer very quickly on google typing Unity camera fade. Make sure you’re researching before asking, as many questions have been answered. how to fade in/out a scene? - Unity Answers