How do you tell the difference between attention-seeking and real stress in a young puppy?

I’m a first-time puppy owner and I’m still trying to understand what my puppy is telling me. Sometimes she leans on me, makes a small whine, or walks around in circles. I can’t always tell if she wants attention, feels unsure, is a bit overwhelmed, or is just being playful. I don’t want to ignore her if she really needs comfort. But I also don’t want to teach her that whining is the way to get everything. For people who have raised puppies before, how do you tell the difference between “I want cuddles” and “I’m feeling anxious”? Are there simple body language signs that beginners can look for? I’m still learning, so any advice would help.