The honest truth is Valve is much more dedicated to other things than CS2. It’s a sad fact, but they legit don’t see it as anything but a skins cash cow to be pumped when the next quarters status quo must be met.
The wallhacks are so prevalent I’m assuming they plan on making it a blanking feature at this point lol
One last petty comment (I promise I’m just trying to help), I hear bazzite is more equipped for cs players thanks to all the immutable rollback features that help to foolproof certain issues like this. (I don’t personally use, but have seen it getting praise from many spheres/communities)
Are you sure there is absolutely nothing that would interfere with the vac anti-cheat service? No anti-virus, firewall, selinux additions whatsoever? I’m unfamiliar with ubuntu, but it may come with some pre-installed somethings that vac has classified as potential cheating software
Also I know this is extra as heck, but I really would try the ‘verify integrity of game files’ one more time after all the other things you’ve tried as a last resort strictly from that solving my issue more often that you’d think lol
The system is functioning exactly as planned–here’s to hoping we can imagine something better soon …not for our sake, but maybe our kids’ kids