How did you connect the headset to your laptop and which laptop model is it?
Does it have one MIC port and one earphone port or a combined headset port?
change the default playback and recording device in windows sounds menu
View: https/www.youtube.com/watch?v=YWX4WxMkDxk
View: https/www.youtube.com/watch?v=MmbkbXkHz18
Ouhyou don't really need to use the Realtek audio manager