Hey man,
I’ve never personally tried this and am not sure as to the best route. I did see this software called Melodyne and it might be able to do what you’re looking for. It’s pricey but it looks like it has a 30-day trial? Might be worth a shot!
Sounds like you definitely need to get your hands on a DAW (digital audio workstation) and I can personally recommend Cubase as it’s my software of choice. You can also mess around with trying to EQ out the guitars manually, doing some surgical cuts in the mid and high frequencies. It won’t sound super clean but it could at least lessen the intensity of the guitars in the track.
But yeah, get a DAW man! Once you get one that’s when the fun/learning begins. š And yes you’d be able to program drums inside a DAW as well.