Re: Sims
@Laurnarose The Sims 4 files in Origin Games are left over from when Origin was the launcher and that was the default install location. But the Delta folder contains patch data, not the data for actual packs, so if the only pack folders are in Delta, those packs aren't installed.
The files in the Steam folder may be from a current or previous Steam install, but here again, Delta only holds patch data. Program Files\EA Games is the EA App's default install location, but it should recognize a game installed in Origin Games as well. The EA Desktop folder contains data for the EA App itself.
Since you seem to have at least a bit of a mess on your hands, I'd suggest uninstalling Sims 4 with Revo Uninstaller (the free version is fine). Revo will find all copies of the game and remove them, allowing you to start fresh with exactly one installed copy. More detailed instructions are here:
Whether you need those instructions or not, please make sure to rename the Sims 4 folder in Documents > Electronic Arts to something that doesn't include "Sims 4," so Revo doesn't flag it for deletion. This folder contains your saves and other user data.
As for where the game should be installed, that depends on whether you're installing through Steam or the EA App. If you'll use the App, the files can be in the default location or in whatever other folder you want; you could create a new folder if you prefer. Just don't install into Documents.
If you're installing through Steam, I would first uninstall Steam and reinstall it to somewhere that isn't Downloads, that is unless you have other Steam games installed. (In that case, uninstalling Steam would remove those other games too.) It would be best to install to Program Files (x86) or a dedicated folder you create for this purpose. Sims 4 will install here:
[install location]\Steam\steamapps\common
If you don't want to uninstall Steam, you can create a new Steam library and install Sims 4 there instead:
https://help.steampowered.com/en/faqs/view/4BD4-4528-6B2E-8327