Hello. The introduction of an essay is very simple and you will be able to do it without much difficulty. This is because this introduction should be presented as a short paragraph (with 4-6 lines) where you present the theme that you will be working on during the essay. In a nutshell, in the introduction you will situate the reader on what the essay is and what will be discussed in it. In the case of an essay with the theme "What does it mean to be wicked" you can write the introduction as follows:
"Wickedness is a characteristic that can reach humanity in many different ways, besides having several meanings that can be presented in different ways. A wicked person has evil as a main trait of his personality and has difficulties in following moral concepts and ethics established in society."
