Laptop for Sims and Uni wanted?

Unfortunately my laptop gave up the ghost yesterday and now I need a new one. Unfortunately I do not know anything like that! Can one of you help me? It is important to me that it is handy and slim, because I mainly need it for the university. It would also be good if he gets along well with games like Sims. There are no other claims. He should not cost more than 500. Can somebody give me advise?

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