Start your gaming setup with a desk around 100 to 120 centimetres wide to fit...

https://astro-wiki.win/index.php/How_to_Decide_Between_a_Wider_Desk_or_Vertical_Shelves_for_Your_Workspace

Start your gaming setup with a desk around 100 to 120 centimetres wide to fit your essentials without crowding. Use a monitor arm to free up surface space and keep screens at eye level