Both Horizon 4 and 5 are included in the subscription for PC.
Searching for "full version free downloads" for delisted games often leads to: download-forza-horizon-3-game-for-pc-full-version
Some retailers may still have leftover digital codes, but these are increasingly rare and often expensive. 🛡️ Safety Warning Both Horizon 4 and 5 are included in the subscription for PC
If you already bought it, you can still download and play it from your "Owned" library. download-forza-horizon-3-game-for-pc-full-version