@simsss4gamerrr Using established convention, I will refer to your preexisting drive as C: and your new drive as D:. It's possible your drives have different letter assignments than that, but I will use these letters for the sake of example.
Your Documents folder should be located at C:\Users\<yourwindowsusername>\Documents. The Sims 4 settings folder should be located at C:\Users\<yourwindowsusername>\Documents\Electronic Arts\The Sims 4. Anything removed from C:\Users\<yourwindowsusername>\Documents\Electronic Arts\The Sims 4 when you uninstalled The Sims 4 may be lost if you didn't make a copy of it before uninstalling the game.
My understanding is that after uninstalling The Sims 4 and Origin, you reinstalled both of these programs to your D: drive (i.e. the new drive). However, C:\Users\<yourwindowsusername>\Documents\Electronic Arts\The Sims 4 is still the location the game will use for mods and saved games; that doesn't change unless you change the storage location of the Documents directory. The Documents directory doesn't have to be on the same drive as the Origin client and The Sims 4.
Unless you are terribly low on available space on your older drive, I would leave the Documents directory on your older drive, as moving it can potentially disrupt other things, although such issues are usually minor. Since you still have copies of the previous mods you were using, they should work if you add them back to C:\Users\<yourwindowsusername>\Documents\Electronic Arts\The Sims 4\Mods.
If you still have your old saves, they should work if you add them back to C:\Users\<yourwindowsusername>\Documents\Electronic Arts\The Sims 4\saves. If you lost them when you uninstalled the game, you could try right-clicking the C:\Users\<yourwindowsusername>\Documents\Electronic Arts\The Sims 4\saves folder, selecting Properties from the context menu, then in the Properties window, selecting the Previous Versions tab to see if there is anything listed there that can be restored. If not, you could try Windows' System Restore tool to restore your system to a point before you uninstalled The Sims 4 (if you have a system restore point that dates that far back) and see if you can recover your save files, however, you would then have to uninstall The Sims 4 from your C: drive (i.e. the old drive) again. There are also third-party tools that can be used to try to recover lost files.
If you really want to change the storage location of the Documents directory to your new drive, here are instructions.