How do people do it?

Living in an of itself is exhausting. Sometimes I find it too challenging to even eat, brush my teeth, exercise, stretch basically doing anything small. All I can do is distract myself with social media and games. How do people pursue their passions? I mean yeah I do have hobbies but they're not as fulfilling. How do people get into relationships and get married and have families and have so many responsibilities? I have almost none and I feel like I can't do it. I'm so disillusioned with the world. I don't want to leave my bed. What's the point? And even when I try to better up myself I just do it for few days and then give up.