We can try to catch some minutes on Discord, I am hardly someone who should teach mixing but I think I could be a bit helpful. And please note I believe your mix is a common theme here in the feedbacks not because it would necessarily be bad, but because your composition is brilliant, so when people want to help you push further, mix is the natural lower bar. :)
Don’t get disheartened by it, we’re just nitpicking because there are no big issues to latch onto. 😊