any lectures where he specifically talks about how to be alone and how people are not able to be alone and need something going on
Yes — the search results include several passages where Watts specifically talks about being alone, discomfort with solitude, and the need for something happening to avoid being with oneself 35791114.
He says that in a quiet setting, like “a doctor's waiting room,” people can feel uneasy because “there's this worry, this lack of distraction” and “I'm always wanting to get away from myself” 3. In another talk, he says that when people are left alone “with ourselves in silence and there is no distraction,” they tend to feel uncomfortable, especially in cultures that like to keep the mind busy and live in constant noise 711. He also describes solitude as something necessary, saying “One has to have privacy. You have to have space in which to be alone so as not to become a rubber stamp” 9.
Watts also frames being alone as a chance to find out who you are without outside pressures: “now listen don't tell me who I am I want to find out for myself” 5. And he links this to the idea that one can “go beyond what both distinguishes and segregates us as human beings—our thoughts and ideas” 2. In his autobiography, he says his role is more like a physician than a minister, because he wants people to “graduate from discipleship” after they have heard what they need to hear 6.
If you want, I can also pull together the most relevant talks by title and summarize each one’s angle on solitude.