Carplay - Phone call problems

Hello! Please help me. I have been using the 13 Pro since November 2021 with great satisfaction. So far I have only used Carplay for navigation and listening to music (Spotify). However, recently, I have had several occasions when I get a call while driving, while using Carplay, and the caller cannot hear me at all, but I can hear the caller perfectly. The BT system in the car is perfect, no such problem there. Has anyone else experienced this? What am I messing up? It is simply incomprehensible. Siri is also active. Change cable, restart phone and reconnect...all done. Only this function doesn't work. It's the latest 15.4.1. The car is a 2018 Skoda Fabia.