Im in no way an expert in any of this, but the main problem is around 1:10 where the backing guitar, top guitar, keys, synth,brass and some top lead synth play all at the same time feels a bit too much. Lot of them even sonically battle for the same space (especially the brass and synth)
You could try low-pass filtering some of the more backing elements to give more top-end to the more important parts..
I honestly can't tell you more. I'm going off of my limited knowledge, so take this with a grain of salt. Probably just come back to the song in a week with fresh ears and try to play with mixing, filtering, maybe some panning and see what works!