Improving sonic quality

Hey Suno cats!

So i have this mix that i insisted with Suno use my actual guitar. that despite having a studio room in my house with nice mics, I was lazy when i mixed this and just played and sang it onto my iphone. It improved my voice but my guitar sounds sonically poor.

Other than that I dig the mix. Is there a program I can load it into to make the intro a little more ‘beefy’

https://suno.com/s/Futik2hLT5SK1oth