Quoting: tfkMy advise is always:

1. Create a subnet which cannot access your home network.
2. Build a dedicated PC and put it on this subnet. And never put your personal stuff on it.
2.a. or get a console like a ps5 and put that one in that subnet.

most consumer ISP's in my country don't supply a router with that capability. Let alone having wifi on a separate subnet to the LAN. Having VLAN configuration is usually for custom routers. I mean it's good advice albeit could be a bit cumbersome if you want to do other things than just gaming on your PC such as home file-sharing, streaming to another PC etc..

Not to mention once you have a custom router you are now the sole system administrator for the home, which many people will probably forget to keep upto date with firmware, security updates.

And of course once you are on the internet in any capacity with that machine there is lots of tracking.

So my advice is to not install Kernal level anti-cheat. And it might be better to use encrypted partitions on drives in your PC which are mounted temporarily to access personal information and they are never mounted when Steam is running or any other 3rd party client software.