HP: What would you do if you were Snape in his time at Hogwarts?

What would you do if you were Severus Snape in his time at Hogwarts? Benedict Clarke, an actor who played the young Severus Snape in one of the last sagas of the Harry Potter films, now finds himself in the body of 16-year-old Severus Snape and begins to live like one in the world of Harry Potter. Time plays a trick on his life and his knowledge of the future confuses him even more. The future, the past and the present get mixed up. What does Hermione Granger have to do with all this? A FF in which you will have romance, action, drama, magic and two people who do not belong to the magical world of Britain in 1976, but still go ahead and seek to live their lives and improve the lives of others in their way to end the Dark Lord who threatens the lives of all. Each chapter will be between 2000 and 3000 words. There is no system! This is a Fanfic that only focuses on the canonical world of Harry Potter, all the previous past of Severus and the other characters in the story is canonical, it will only vary and change once Severus starts to change and use his new knowledge. Severus/Benedict, will have a great intellect, talent and creativity for magic as described in the canon, all this added to his new knowledge, he will be a powerful wizard, but it will take quite some time to be as powerful as Voldemort or other wizards of that caliber. Severus/Benedict, the protagonist of this article, knows the world of Harry Potter, but he is in a decade of which he does not have much information, so he will try to use his knowledge about the possible future of this world to advance in life. As I said, there is not much canonical information about the 1970s in HP, so to make Severus have a past as canonical as possible I used all the canonical information about the 1970s and only added information to the blanks left by the canon, so the plot of Severus' past would be as canonical as possible, it may change a little bit due to my intervention in the blanks, but in short, the general trend of Severus' past does not change and the small trend may change. The pairing for the end of this story is already decided, but before being with this person Severus will go through many situations and relationships, so you can vote the pairings that Severus will have before reaching the right person, if you want to give ideas, you are more than welcome to share them. Disclaimer: The original images do not belong to me, as does the content of the Harry Potter characters, books or movies. All belong to their respective creators and owners. I stated that I do not own the rights to anything other than the FF idea.