If you are looking for a specific visual style, these creators offer presets known to work well with this setup:
If you'd like, I can help you based on a style you like (e.g., "bright and airy" or "dark and moody") or show you how to uninstall it completely if it's causing crashes. #reshade faq – @pictureamoebae on Tumblr
You may see a warning about an Add-ons system when opening 5.1.0; this version includes features that can be used for cheating in multiplayer games, but it is safe for the single-player Sims 4.
Navigate to where your game executable lives. This is typically The Sims 4 > Game > Bin .