It all depends on where you are.
Myopic farmers will follow their own way and system
- best to be avoided at all costs, especially in France where they think the law doesn't apply to them.
Provincial towns can be erm "interesting". Observation, what observation!
Cities, on the whole, are good with drivers actively looking out for 2 wheeled road users. Suburban Parisiennes are probably the best as a lot of them have progressed from 2 to 4 wheels.
Note: On-street parking in Paris. Unless on a steep hill leave the car out of gear and the parking brake very lightly applied as, when parking, the drivers will push your car with their's to give themselves a larger space or to exit the space.
In general, in the south of Europe (Latin countries) don't expect anyone to follow the rules of the road. In fact most don't, so drive defensively
In North Europe they tend to follow the rules of the road but drive in an "interesting" manner so, guess what, drive defensively. Germany doesn't count as they rigidly apply the rules at all times whether the rule is sensible or not.
In Poland and Greece they have no idea how to drive
so it's your choice whether you drive in those countries or not.
I am of the opinion that in some areas, the majority of drivers haven't taken a driving test (Department 77 in France immediately springs to mind as does 2B - Corsica). You soon learn to spot them from a distance and ride accordingly.
I am also certain that indicators are an optional extra on all European cars which most people don't pay for.
Only two days ago I had an idiot nerf* me from behind at a junction. It seems he didn't understand that he was supposed to drive in his lane and the fact that the two lanes were wide enough to accommodate double-decker buses was irrelevant! He wanted both of them
* nerf - exceptionally light bump, nearly unnoticeable.