Hello, I'm so sorry if this is the wrong forum to post this. I'm new here and I got really confused when looking for where to post this.

So, Black Ops came out 6 years ago, and I still love the game to death but I never bought any of the DLC because I was scared to waste
lots of money and not even be able to play any of the maps online.

I have all the downloads to the DLC but could I just put them in my Black ops folder and play?
Will Steam detect this pirated version and VAC ban me or something?
Any help would be nice. Thanks.