Csgo non prime is full of cheaters, how valve can fix that?

You either need to get prime or have a strong history with your steam account as your matches are decided based on how trust worthy you are so if your csgo inventory is valued over $100 than the matchmaker will think its less likely you'll cheat. If you play for a long time the matchmaker will eventually see you as trustworthy, spending money on csgo makes you seem more trustworthy quickly. VAC sucks because it respects your privacy more than other anti-cheats. valve needs to find the cheats themselves, they don't take copies of cheats like many other anti-cheats. most anti-cheats will look through your files and send some of them to the anti-cheat servers. VAC just looks to see if known cheats are running but doesn't look through your files to find new cheats.