If the game was more realistic, then you can only fight against certain civs.
Whan was the latest Mayans vs Turks war?
Did the Vikings fought the Malay once?
1578 castillan war…
This could actually be a good thing, as even “historically accurate” movies/series almost always change how the battles went for the sake of romance. Imagine, agincourt, waterloo, hastings remade in TW (and they were).