Koz has had some very good results with a $15 USB microphone - I think it was a “Logitec” USB mic.
Re. the “Raspiness” - if you want to reproduce the distortion effect on the “fox” voice, try the “soft clipping limiter” plug-in available here: Peak Limiter / Expander - #21 by vinylivo
Set the threshold level quite low.
Then use the Equalizer effect to reduce the bass and reduce very high frequencies (turn down the frequencies below about 300 Hz and above about 7 kHz).
You will get better results if you have a better, cleaner recording to start with.
As has already been said - go for it with the “acting” part of the recording.