You keep saying you behave poorly because this or that. It doesn’t matter why. Saying that it’s the only way you know how to behave or behave this way because of this or that is an excuse. You also said you behave this way because of fast food join did something to you. It’s an excuse. They did nothing to you. You did things to them, for which you were fired. Saying you behave poorly because you have motives, is an excuse.