Re: device

@AngelicAster  Your account owns your content, not your computer.  So as long as you can still access your EA account, you'll be able to reinstall your Sims 4 content, for free, on any system, including your current one once it's reset.

Please keep in mind that any saves, sims, or lots you've created are stored locally, so those files will disappear unless you preserve them.  Sims and lots can be uploaded to the Gallery, but saves are only ever in Documents > Electronic Arts > The Sims 4 > saves, so you'd need to back up that folder manually.