I have no problem with hiking alone all day, in fact, I really enjoy it, but at the same time I do like to meet people, I'm never keen just to kick my heels around a tent during the evening. I treat dawn and dusk differently, daylight is for hiking, darkness is for eating, drinking and then sleeping. I don't cook and always seek out a pub, restaurant or cafe (sometimes I even wandered into a village hall meeting, just to be nosey) and will always make an effort to talk to someone. I don't care who they are, everyone is valuable and of interest to me. I'm lucky I think because I find it easy to strike up a conversation with anyone, I just need eye contact, a smile and a soundbite to get me going. That can be a quip about the beer, about Brexit, asking the way, the sound of a motorbike going by, a cobweb in the corner, "so nice to have boiled potatoes for a change," the conversation prompters and opportunities available to me are endless! If I get stuck for a night and have to wild camp I can live with that until the next day. Direct eye contact and facial expression is the key to it all!
I too have had those days when 'nothing goes right' or I'm feeling 'washed out and down in the dumps' etc. My 'solution' is to eat, look at the sunsets, read a book on my phone, have a wander around, take a few nips from my brandy flask and then just get in my tent and go to sleep. Tomorrow is not only another day, tomorrow is another opportunity!
Sad to hear that the Les Houche site is closed down, I think there is another one about a mile back, but have never stayed there.