What Type of Hard Drive Should I Get for My Acer GX-781?

Hey everyone! I recently got an Acer GX-781 from a family member, but it doesn't have a hard drive. I'm completely clueless about what kind of hard drive to get. I'm not sure if there are specific requirements or if I can just pick any drive as long as it meets certain specs. The PC is a bit older, so I don't expect it to run very demanding games like Genshin Impact, but it would be great to play something like The Sims on it. I apologize if this is a basic question, and I really appreciate any guidance you can give. English isn't my first language, so sorry if I mess up the terms!