My sims 4 game will not launch.

simsmasterk​  Are you saying that if you click Resume on the Main Menu, you get an endless loading screen?  Can you start a new save and get into live mode?  I'm not saying you need to abandon your current save, only that this is a useful test.

If the new save doesn't work, remove your Mods folder and test again.  If it works now, test your main save with the Mods folder still removed.

If the new save works fine, but the old save doesn't, I'd like to see a lastexception file from the endless loading screen.  How to provide one is covered here:

[START HERE] Crashing/Back to Map/Endless loading (Patch 117.221) | EA Forums - 12512130

I'd be happy to look at a dxdiag as well, but only if the new save doesn't work even without any mods or custom content present.