To install the game you will not need to use VLC media player at any step. If you're trying to use the ISO files to install the game you'll need some virtual drive software. Here's my small tutorial on that;
https://www.youtube.com/watch?v=nD3DSc-aglE
As far as getting the ISO's, make sure you're clicking on the magnet link for them rather than any of the ads that usually pop up on that website. That's as far as I can really help. Be very careful downloading any copies of anything from torrent websites as they often include a crap ton of ads that pop up. If you do have Malware now on your machine I recommend you download and run Malware Bytes. Once again, make sure you get it from a legit website as there are plenty of websites that say they have Malware Bytes but instead just want to give you more Malware.