I would level your sounds to around 12-15 db each, gainstage them as well, use some a.i. mastering plugins to start like bandlab, but the main thing i would do is learn theory. The song theoretically wasn't cohesive. I know its old and you've prolly gotten way better since then. If you want the basics i can teach you via IG for a small rate per hour. i would also arrange your beats. You need an intro, chorus, verses etc. Too much to explain in this small box lol. HIt me up on IG @prodbyedren