Audio problems

Hello, I have a problem with the sound via zoom. On site, I can be heard through the installed external speakers, but I cannot hear the participants on site. virtual cable is installed on the computer. In Windows, headphones (Realtek Audio) are selected as the output device and microphone (2-USB Audio CODEC) is selected as the input. The question for me now is whether I have to choose different settings here. I ask for help.