Either disable the mods within the in game options (the same place you should have had to turn them back on after the patch) or remove them from your mods folder. If you're very new, don't have many mods/CC, or all this sounds overly complicated you can go vanilla. I've heard good things about Sims 4 Studio, but I've never used it so I don't know how it works.
You can also try the links in the OP and in other posts. You may have to do this more than once as you encounter bugs. Slowly add back mods while making sure your game still works. If it doesn't remove half of what's left. Usually people use the half and half method: remove half of your mods, then see if the game works.
Not every single CC item will break, but it can be tedious to figure out which ones did and sometimes it's not even obvious that it's a mod. Future patches that fix things on their end may actually re-break mods. Modding is a 'do it at your own risk' thing, EA provides no support for it. You have to figure out which ones broke too. You will have to update each mod and CC item that breaks.
