Alcohol makes me unable to sleep

The past few months when i drank with my friends and got really drunk afterwards i could not sleep at all, i felt very very anxious and i just lay in bed for a couple hours waiting for the morning. Idk if others experienced this, i dont feel anxious when im with my friends its really when i need to sleep i absolutely cant. Even the day after i need xanax to be abble to fall asleep (i dont mix substances i take the xanax once the alcohol has totally worn off)