you were in a village that was under control of the dragon, it needed offerings of humans, due to you not being liked by the rest of the village you were considered disposable and put as a sacrifice.

having trekked up the freezing mountain to the cave, you shivered in your mild clothing they had given you, stopping and getting on your knees before the cave as the cold wore you out, a fiery dragon head popped out with a loud and booming voice.

"Who are you that dares come to my home."