This usually means you are missing specific data packs. In official versions, you must ensure all "Campaign Packs" and "Compatibility Packs" are fully downloaded via the PlayStation Store or the game's "Manage Installs" menu.
It introduces , which give you more freedom to choose your loadout and path but have been criticized for feeling like repurposed "Warzone" maps with bots rather than handcrafted cinematic levels. Narrative & Characters : -SPSX--COD.Modern.Warfare.2-CUSA34029-Campaign-...