It's exactly the fact that it's not supposed to be deep that's difficult! It's easier to talk about important and interesting things than empty chat about nothing. The thing is absolutely nothing happens in my town, it's so small. You can go to exercise (aerobics) or to the pub/coffee (but none of my friends live here so I have no one to go with). Then there's cinema and I went there last week which could be used in small talk I guess. Once in a couple of months there's theatre.
Maybe someone I could go to the theatre in the town that's more than an hour away by bus, but that would have to be planned and probably in the spring when days are longer.
I'm not very interested in meeting people because I'm forced to work with them all day. I enjoy it but I need to be left alone and just breathe in the evening.

It got me on Tuesday again... My 13yo student who's an extrovert asked me how I was and I just said OK but tired because I had to get up early. Maybe I can just invent things such as I'm going for a coffee with my friend in the evening (even if that's not true) in order to appear more normal. I just have to prepare what to say in advance so I'm not caught by surprise.