Why doesn't my sound settings detect my separate mic?

[S.E.B]

So, my mom got me a mini microphone because she knows I like to make videos, so I go to set it up and I test it, but it instead uses my built in microphone that my computer has, I've tried many different tactics to try to get it to work, I attempted to unplug my headphones and try and use it as a stand alone, but it didn't work, I tried to add another input the device, but it never was detected as a wired microphone, and it never worked, is it about the microphone I bought? Or did I miss some sort of step while setting this up? Please help me, it'd be great!

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