The Blues lost the first-leg of their Carabao Cup semifinal at Tottenham due to the intervention of technology.
Sarri said: "The problem is not the referee or one or the other. The problem is they are not ready to use VAR.
"They use the system for the first time in the League Cup so they need only to get used to using the system. I don't like the VAR but it is only my opinion.
"We risk changing the atmosphere in the stadium. You score but have to wait for 30 seconds to celebrate. It is negative for the atmosphere in the stadium."