Condenser mic help

[IIINicky]

I currently have an Auna MIC-900B-LED USB Cardioid Studio Condenser Microphone (https://www.amazon.co.uk/dp/B014LBXYCY/ref=twister_B00M951R24?_encoding=UTF8&psc=1) and I'm wondering if I can buy an audio mixer to further improve the sound quality. Can I even purchase and audio mixer for a USB mic? If I can, please suggest some!
Thanks,
Nick

 

[ssddx]

if you have a usb mic want a mixer, it would need to be software based as external mixers are generally analog.

 

[IIINicky]

if you have a usb mic want a mixer, it would need to be software based as external mixers are generally analog.

Can you recommend me some software?