I am struggling to start an introduction for some reason?? I am studying LLB Law by the way.
keep it simple. "in this essay, I am going to argue that ..." you might want to briefly summarise the main arguments for/against no reason why it should be longer than 2-3 sentences, the more words/time you save up for your main paragraphs, the better
if in doubt there's no shame in emailing the lecturer, these kind of questions were super common back when i was a first and second year