If you have an Xbox with a disc drive, you can still buy a used physical copy from retailers or second-market sites.
If you previously purchased the game digitally, you can still redownload it from your library on the Microsoft Store or Xbox app. Unofficial "ISO" or "Repack" Downloads DESCARCД‚ FIИIER – FORZA HORIZON 3.ISO
Because the game is no longer for sale, many users look for archived versions or "repacks." Forza Horizon 3 All DLC - Download Link : r/abandonware If you have an Xbox with a disc