Error de4ee14f:29f00e76:00000000:4b0d852b

@killaki19  Please make sure you're removing the mods, or the entire Sims 4 folder, from the correct location.  It's not uncommon for the game to read a different Documents folder than the one you access, particulary if you're looking at OneDrive's version of Documents.  So please check both OneDrive and the local Documents folder.  For the former, you can click OneDrive in a File Explorer window and navigate from there.  For the local version, open File Explorer, click This PC in the left panel, then open C > Users > [your username] > Documents.

In both cases, if you find a Sims 4 folder, move it elsewhere; the desktop is fine, but rename the folder first so you're not trying to put three Sims 4 folders in the same location.  Then try again to start the game.  Please let me know what you find as well.