There is one simple rule to drive safely - deliberately slow down on roundabouts. No matter what lane you are in and no matter who is honking.

Actually there is an advantage in driving in the middle lane, in this case when you exit the roundabout, you have to pay attention only to the cars from your right side. And again - slow down when you enter and exit roundabout - this gives you time to react if something happens.

I shouldn't mention always keeping the distance, but since nobody does - again keep the distance at least 3 times of the length of your car in front of you. Don't drive "glued" to the car in front of you.