Of all the free Battle Royale games, this is definitely my favorite. I've tried Fortnite, but even before it became a full on carnival, it wasn't the game for me. APEX was actually okay, but still too much weirdness for me. I guess Warzone is just most familiar for me, being an FPS gamer since the start of my gaming hobby
Also, I play a lot of R6: Siege. It is currently my most played game. I guess I love the balance Warzone gives me of a tactical shooter (you don't simply respawn, so carefully plan your moves) and just rush, point, shoot and continue if you feel like it. Siege is slow paced, any CoD or BF game is fast paced (which I also enjoy, at times), Warzone feels like it's in between.
My only issue is the frequent bugs and glitches this game still has at times. But hey, it's free, what do you expect?