Planning a gaming setup in limited space starts with choosing a desk around 100...

https://titussexcellentnews.nexorafield.com/posts/desk-fits-on-paper-but-feels-unusable-in-real-life-what-should-i-measure

Planning a gaming setup in limited space starts with choosing a desk around 100 to 120 centimetres wide to fit your gear without crowding. Use a monitor arm to free up surface area and keep your screen at eye level