audio desktop

Hi Everyone! i want to make new device that i can use it in any program/browser for recording/streaming, and since i don't have a stereo mix in my laptop i tried everyting but no result so i thought maybe there's a chance with obs studio but didn't find the anwser in my search i hope someone...

Hello, you will see when I make a recording, the audio on my desktop I do not hear it and it is not muted (OBS if it detects it), but if I put the audio on the desktop with elgato sound if it is recorded, but I don't really like that program since I hear it very low. By the way, although it is...