@madeintrinidad Sims 4 will always try to use the computer's Documents directory, as in, the folder Windows designates as the current user's Documents folder. If the game cannot access this location, it typically defaults to the Public folder or else throws an error. So the question is what is the current Documents directory, and do you want to change it?
To find the location of the directory, search in Windows for Command Prompt, open it, and enter this command, starting with reg query:
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" /v "Personal"
Please post the result here.
There's no need to wrestle with a symbolic link or to continue to use the Public folder if you'd prefer not to. Either one is of course a reasonable workaround, but the simplest approach is to designate the Documents folder as whatever you want it to be.