To plan a gaming setup in limited space, start with a desk about 100 to 120...

https://www.fastbookmarks.win/planning-a-gaming-setup-in-a-small-space-start-with-a-desk-about-100-to-120

To plan a gaming setup in limited space, start with a desk about 100 to 120 centimetres wide to fit your monitor and accessories comfortably. Use a monitor arm to free up desk space and give you flexible screen positioning