I think YouTube, and other sites, have ideas of how to create your own save file.
I forgot the name, but there is a person on YouTube that recreated her save file to be more like Disney, and has details on how they did it. They also don't use CC or Mods, just what is available to them. They also had to replace all the lots.
Other Simmers have the process already done, and have save files you can download in place of your own games as well.
They do mention that the process can take a very long time, so keep that in mind as well.