Please tell me about audio hijack call recording. The playback effect of the other party's voice has an echo. Please give me some advice on how to set it? It's hard to find this explanation on the Internet, and I don't understand the left and right channels.

Xiaobai just installed this program. After recording it according to this process, he played the recording. The other party's voice was very empty and echoing. How do I need to set it up to be normal? In addition, my voice and the opposite voice are left and right channels respectively. How can I set a channel one by one? I have a Mac mini, and the microphone is 3.5 mm. I plug it into the machine and use a y-shape to divide it into two, one for the microphone and the other for the headphones. The speaker is connected to the usb port in front of the Mac mini with 3.5 to usbc. Since I need to use speakers and headphones, I use this way. https://i.imgur.com/IUDpBXB.png