We can't stress this enough: the vast majority of people in the world are actually very nice. People who are genuinely interested in your bike touring trip will go that extra mile to offer a cup of coffee or a space in their home or garden to kip for the night. Other people who aren't naturally curious about bike tourists won't make the effort to come to speak to you, so you're unlikely to encounter them. And if you end up door-knocking to beg a bit of water to refill your bottle or a patch of grass to pitch your tent on for the night, you'll find plenty of good Samaritans who are more than willing to help. All the more so if you're on your own rather than with a buddy, because people tend to assume that two people can look after themselves!
There are endless accounts of chance encounters in France and beyond where people have lent a helping hand to a cyclist in need, from bringing a morning cup of coffee out to someone pitched up in a field, to making an extra space at the table for an evening meal. Travelling alone restores your faith in humanity!