Hello PMC!

Today I need help with setting up my Bandicam recorder. I have been recording for few months now and so far it is going pretty good! Recording quality is good but what I am not proud of is my mic quality! (see here for example: https://youtu.be/29lcEbVVhFo)

Now I am wondering how can I make my mic have no static noise? What should I do? Know what buying a new mic is not an option I will consider so do not suggest that.

EDIT:

I am also using Realtek HD Audio Manager so if there are any options to set there too would be nice to know.