Hi @1105Cats, you are looking in right place - if the file isn't there than indeed must have been deleted.
Before you start - your saves should be fine, but just in case you may backup them (they should be in your documents folder).
I assume you own the game via EA App, not for example Steam or Epic (otherwise some steps will be different). First thing you can try is repair you game via EA App. In EA App library go that blank square you have instead of Sims 4 icon, chose the tree dots menu and repair game. This should restore missing files. You can also choose the uninstall option to completely remove the game and then install it anew.
If the three dots menu is not available to you then log out of the EA App (just to be safe) and go to Windows>Settings>Applications (or type application in search bar). Wait till the list loads and find Sims 4, click on it and chose uninstall. Now log in to EA App, you will need to install the game.