What should I buy/do to improve my setup?

I currently use my setup both for gaming and for programming. I almost don’t use my ultrawide, because it’s inconvenient to keep switching and turning on/off my monitor + moving my keyboard and mouse to the other side. I mainly use my AOC monitor, because I like to play some Fortnite in the evening. How would you guys make a handy to use and minimalistic setup out of this? And what should I buy to improve my setup?

I’m already planning on doing: - Cleaning my setup - Doing cable management