I forgot to specify that I am not shy at all and that I wander as much when I speak with my parents at home as in public or with friends. Under alcohol I can talk to anyone without stuttering and without any embarrassment either I would even say that when I talk with strangers at the gym, for example, my stuttering fades because I concentrate, On the other hand, with my family I need much more because I speak faster and concentrate less. That’s why I think it’s mainly related to a state of neuroexcitation. But thanks you for your answer🙌