Windows 11 Why is my pc not picking up my mic but using every sound i hear as mic input?

[Robobin]

Nothing i say into my microphone gets picked up, instead my pc acts like the microphone so every sound i hear gets used as sound input which can lead to ear-piercing repeating sounds. Neither discord or Windows itself is taking my actual mic input.I didn't change my input or output setting when this problem occured, so its not a setting i messed up. I tried every input device i had, but none of them worked. I tried plugging the cords into different audio jacks, that didn't work.

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