Well uhhh... I gotta say do you not know how this works?
Energy drinks and vapes/cigarettes/alcohaul bloat your stomach without food.
And starving yourself is always such a bad option because once you eat food after you will gain fat way easier after than you did before, so your just setting yourself up for failure.
Your still so young, nothing in your life is set in stone yet and you shouldn't be treating your body horribly, now is the worst time in your life to do that.
You should just eat meat, eggs, fruit and vegetables in a healthy amount. You have the Internet so you can always look up things to eat to have a healthy body.