The left lane has arrows for turning left and straight ahead.
The right lane has arrows for straight ahead turning right
However, the first left turn is pretty straight and that is confusing.
The exit has 2 lanes and also seems to be marked for 2 lanes to exit
So all up I think the roundabout is marked incorrectly..... The arrows are misleading as the arrow implies you can go straight from either lane and the road looks straight, it has 2 lanes to exit (and in that case the red car has right of way) but the left lane is the only one allowed that exit according to the arrows.
So the red car is at fault....but the roundabout is a mess....