If you're interested in graphics mod like improving shader details, increasing lighting details making the game look prettier etc. You can try:
-ReShade for Sims 4
Tutorial here: https://youtu.be/X8cjH7smCCI
-Luumia's NoGlo and NoBlu mod
https://luumiasims.com/post/167217001494/i-released-the-noglo-mod-about-a-year-and-a-half
FYI ReShade is quite resource heavy so you might drop a few frames depending on your ReShade settings.
Some useful CC websites
- modthesims.info
- https://www.thesimsresource.com