https://www.kozco.com/tech/audacity/clips/ScratchTest2.mp3
In your case, you may have more than one active. Depending on the machine, “recording from the internet” activates everything. In the Audacity setups, you should be recording from one single “real” device.
Note that in this home studio setup, there is a heavy blanket on the table.
https://forum.audacityteam.org/t/too-compressed-rejection/52825/22
That’s not an accident. You can get reflection sound distortions from a hard table and a simple tripod stand.
Just to cover it, most microphone of that type are side-address (talk into the side) and you speak into the company name. It looks OK in the pix, but checking is nice.
This one?
My built-in microphones will mount either stereo or mono. Knowing the machine is good. What is the machine?
Koz