@puzzlezaddictI cleared the cache as you mentioned, it didn't log me in at first so I tried again after like 30 minutes. Thankfully, it logged me in. All my saved families have been deleted. Does this mean I'll have to restart or can I somehow get my old one back? Also, thank you so much again!!
@Skittlessimheart Your saves are stored separately from the game's installed files and may or may not have been removed when you uninstalled. Please look in Documents\Electronic Arts\The Sims 3\Saves for any folders with your save names. If you don't find any, check OneDrive's Documents folder for any Sims 3-related content.
If nothing turns up there either, try searching your computer. Open a File Explorer window, click This PC in the left panel, and enter *.nhd (with the asterisk) in the search bar in the upper right corner. If there are any usable saves, they'll each have at least one .nhd file inside. If the search turns up any saves, click on one, click the "Open file location" icon, and you'll land wherever your files are. From there, drag the entire Saves folder to Documents\Electronic Arts\The Sims 3, or the individual save folders to the Saves folder that already exists.
If none of this helps, then your saves may unfortunately be gone for good.
@Skittlessimheart I'm not sure why the launcher is intermittently not working for you, but two possibilities come to mind. One is that your password has a special character that the launcher is rejecting; the other is that some file within the Sims 3 user folder is being corrupted.
For the former, try changing your password to something with only letters and numbers. For the latter, move your entire Sims 3 folder out of Documents\Electronic Arts and onto your desktop. Open the launcher to spawn a clean folder and see whether you can sign in. If not, the issue isn't the user files. If you can in fact sign in, try transferring the files inside the old folder to the new one, but leave the contents of Downloads behind, as well as any files in DCCache that don't end in .dbc or .ebc.
