Hi @EdgarsK86,
Have tried turning up the volume of the radio/comm inside the cockpit?
Have a look at:
https://forums.flightsimulator.com/t/atc-speech-not-heard/411500
Also, check your sound settings. Look at the last post in this topic:
https://forums.flightsimulator.com/t/atc-audio-i-cant-hear/347400