Video narration
How can "would" talk about the past if you know it from wishes or imaginary situations? Think of your old school days. Maybe every morning, you got up, packed your bag, and walked to class. Once we know we're talking about that time, we can say: "I would get up early, pack my bag, and walk to class." Here, would means those actions happened again and again. The past-time clue can come first; you don't need to repeat it in every sentence. With that past-time clue, would describes a repeated action, not a wish. But what if you're describing a state, not an action? "I used to be nervous before exams" is the usual choice. Would is generally for repeated actions, not how you were or what you felt. For another example, back then, after school, I would feed the dog. So, in your old school-day routine, would marks something you did again and again: "I would pack my bag before class."