It’s never too late to make friends. In fact the best friends are often made in the least expected ways. All these “fixed” groups of friends that you observe may in fact be rather superficially connected and at risk of dissolving or group reshaping constantly. Don’t give up. It takes openness and time to make authentic connections. Start chatting with that person who is always doing laundry the same day/time you are, or the person who is always on the treadmill next to you at the gym, and the kernel of a friendship might just occur. Hang in there.