When planning a gaming setup in a small space, aim for a desk around 100 to 120...

https://smoothdecorator.com/is-100-cm-wide-enough-for-a-pc-gaming-desk/

When planning a gaming setup in a small space, aim for a desk around 100 to 120 centimetres wide to fit your gear comfortably without crowding. Use a monitor arm to free up desk space and easily adjust your screen height