Check Engine Light On problems of the 2014 Buick Regal

Purchased in Jan 2021 with 94k miles and as of Mar 2021 96k miles a catastrophic engine failure of the #4 cylinder. Crack in the piston ring grooves and now has zero compression. While driving the highway at 74 mph. Loss of engine power and check engine light is on and will stall at idle even in neutral while sitting at a stop light or stop sign. Engine oil found under the car as well but not sure specific location at this time. Heavy blue smoke from exhaust and very rough idle with lack of response from the turbo along with the traction control light on as well.