Venomstick,
I have only played IL-2. I have watched a little Warthunder advertising.
As for the tactics they still exist. Boom and zoom works well against bomber types with a tail gun. Attack from the forward quarter with the gun, and zoom to stay clear of the tail guns field of fire.
As for turn fighting, it's called Basic Fighter Maneuvers, or BFM AKA dogfighting. And yes there is energy fighting, generally called rate or radius fighting. Throw in guns, heat seeking or radar guided missiles, chaff, flares, electronic attack, radars, tactics and you have a slice of the modern arena.
Cheers,
Biff