As I recall from my years of hiking in France (that's was over 6 six ago, however), just about every small town has a campground nearby. Mostly I wild camped in France, but that's because I was hiking and thus finding a stealth site is easy. Also, I only carry a lightweight tarp and bugbivy, which don't give much privacy, which makes campgrounds unpleasant. If I were bike touring in France and carrying a full tent, I would probably rely more on campgrounds. In France, campground are typically very nice (lush vegetation). Spain (other than certain parts of far northern Spain, like Basque country and near the Pyrenees) and Greece are another story--campgrounds there are often nasty (gravel ground, no trees, blazing hot in the summer).
In my experience, being ready and willing to camp makes things vastly easier in France in the summer months. Without camping gear, you either have to make hotel reservations in advance or else hope for a vacancy. If no vacancy then you have to keep on riding to the next town, and that can get stressful very quickly. With camping gear, you just pop down to the local campground if there is no vacancy at the hotel. Campgrounds almost always have vacancies for hikers/bikers (not necessarily
for automobiles/caravans). Campgrounds typically would be under 10euro, whereas the only hotel room available might easily be over 100euro.
I wouldn't sell your Raven and give up on camping yet. Also, you should probably start out with tenting at campgrounds before trying to wild camp. I've spent over a thousand nights camping, in all sorts of conditions, and currently spend almost half of each year wild camping, so it's very easy for me. But it takes time to get comfortable with it, especially dry camping (99% of my camps are dry, meaning away from water sources).
