If the device is a 3.5mm microphone, then you’ll need a Headphone 3.5mm splitter cable to correctly manage input.
This is because 3.5mm microphones use the same connector as 3.5mm outputs (thus why older laptops had 2 3.5mm ports before 3.5mm duplex existed).
It works perfectly fine now with a $5 splitter I got from my local hardware store 