I was following this tutorial (How to Use KY-037 Sound Detection Sensor with Arduino - Arduino Project Hub)but they eventually start talking about a potentiometer i dont see in the schematic they themselves put in there. My wiring is pretty much the exact same as far as i can tell. i copy pasted the code they posted and tried it. Didnt work. Also the serial plotter gives something weird. Have a look:
Here's the setup i got.