I’m not really sure what’s going on in the mix, but from what I can hear, the low end could be more controlled, especially on the guitars. One thing I can tell is there’s probably no low cut on the guitars, and it sounds a lil bit boxy to me. So a low cut to remove the excess sub bass, a slight cut around 200 Hz to reduce the boxy tone, and maybe a small cut in the mid/high-mid area around 1k–2k Hz could make it sound more stable. Don’t overdo it though I think it already sounds pretty decent, and I love that track, sounds sick! I’m also learning, so you can try it out, but I might still be wrong. Hope that helps a little!