Under which of the following two conditions applied together, a gas deviates most from the ideal behaviour?

Gases tend to follow the ideal gas equation, that is , to become ideal gas, when the pressure is low and the temperature is high. If the gas tries to deviate from the ideal behaviour, then the conditions should be opposite that is high pressure and low temperature.

We know that the concept of ideal gas is hypothetical as no such gas exists whose molecules occupy negligible space and have no interactions, and which obeys the gas laws. The concept is just theoretical.