A very common search phrase is "Sims 4 DLC Pack Download Unlocked" or "Free DLC Unlocker." This refers to third-party tools (like the controversial Anadius Unlocker ) that trick the EA App into thinking you own DLC you didn't pay for.
Go to your game library, press the options button on The Sims 4, and select "Manage Game Content" to trigger the download. Critical Installation Tips Sims 4 Dlc Pack Download
These are the largest updates. They add entirely new worlds, deep gameplay mechanics (like going to work or university), and hundreds of Build/Buy items. A very common search phrase is "Sims 4
While not "free," buying DLC during sales is 90% off the original price. Steam Summer Sales, Black Friday, and EA’s "Sims 4 Mega Bundles" often let you get $100 worth of DLC for $20. They add entirely new worlds, deep gameplay mechanics