When I´m watching these runs the game looks so bright. For me its dark af. How do I change that?

I'm new to Botw speedruning and very interested in that Windbomb after the Stasis Shrine that sends you straight into the cold area, I just can't find a tutorial. Can someone please explain

Is it allowed to fly with this bed or is it needed to do the other skip?

Sorry I have reset after creating a new room so i was back in the old room but I swear I played alone