Planning a gaming setup in limited space starts with a desk about 100 to 120...
https://www.insert-bookmark.win/setting-up-a-gaming-station-in-a-small-space-is-all-about-smart-choices-start
Planning a gaming setup in limited space starts with a desk about 100 to 120 centimetres wide to fit your monitor and accessories comfortably. Use a monitor arm to free up surface area and create more room for your keyboard and mouse