A more recent option to try is Sims 4's official modding support through CurseForge, available at the Official Mod Hub for Sims 4.
Whether the mod is a small tweak or massive rework, you'll find it there. Almost a decade after release, brand new Sims 4 mods release every day on ModTheSims-the longtime standard platform for Sims 4 for modders.
