However, there are legitimate ways to access some of its content or purchase it at a significantly reduced price: Official Ways to Play for Free (Limited)
You can often find the Arma 3 Apex Edition or Ultimate Edition on Steam which bundles the base game and DLCs at a lower total cost. download-arma-3-apex-pc-game-full-version-free
Arma 3 and its Apex expansion are not officially available as a free download for the full version. The game is a and typically requires a purchase. However, there are legitimate ways to access some