Do you even know the problem with Steam? It reads DNS cache from storage to spy on users’ personal Internet browsing habits. Filesystem sandboxing solves that problem. If your problem is game analytics, then you may have much bigger problems on your hands. OP might not be as tech savvy or paranoid as you. And if OP is, consider providing good, non malware 🏴‍☠️ sources to OP via a link or comment from elsewhere.