Looking at the photos doesn't really give a clear picture of losing a large amount of engine oil.
If it was me I would remove the engine covers top and bottom to get a clearer view, personally I steam clean engines etc. to get a better idea of the source of any leaks and may be look from underneath on a ramp after a road test .
However you have to be very careful not to get any on electrical stuff especially ECUs etc. Many people advise against doing this , so your choice and risk!
You haven't mentioned the miles /kilometers the car has done, smaller higher revving engines tend to use oil even after fairly low mileage.
Although there is oil stains etc. around the engine bay, unless you are getting a lot of oil on the floor where you usually park, is it possible the engine is burning it? Smokey exhaust etc. Maybe someone following your car on a small journey can comment?
I had a vehicle that used no oil around town on slow driving , but a lot more on a fast road trip, what sort of use do you do?